I'm trying to install Fedora Core 5 on my laptop in Dual Boot with Windows XP, and I'm not sure if something's gone wrong after the installation.

I deleted the D: Partition on my 100GB Hard Drive, which left the C Partition intact at 47GB, and left about 47GB of unpartitioned space. I then put in my burnt Fedora install DVD and restarted. The laptop booted from the DVD, and I used the Check Media facility to make sure the disk was alright, and the checker informed me the disc was fine, so I went ahead with the installation.
I installed the Boot thing (GRUB or something isn't it?), selecting XP as the default.
When I got to the parition menu I did the following,
1) Created a 2GB Swap Area
2) Partitioned the rest into an ext3, and set the mount to "/"
The installer was happy with that, and I went ahead and selected all the customise options (I selected to install everything except Web Server things) and then Fedora went ahead and installed, taking about 40 minutes, and there weren't any problems.
At the end, the DVD was ejected, and the installer said to remove any installation media and press the Restart button, so I did, and the computer restarted. My dual-boot screen came up, and I selected Fedora, then hit enter, and it started loading. However it seems to have gotten partway through loading and stopped. The laptop is now sat at,
"Starting udev: _" and the _ is just blinking on and off. It's been like that for about 30 minutes now.
Above that there are what I assume may be error messages. They say,

"Uncompressing Linux... Ok, booting the kernel.
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.0
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.0
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.0
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.1
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.1
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.1
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.2
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.2
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.2
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.3
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.3
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.3
ide0: I/O resource 0x1F0-0-1F7 not free.
ide0: ports already in use, skipping probe
Red Hat nash version 5.0.32 starting
INIT: version 2.86 booting
Welcome to Fedora Core
Press 'I' to enter interactive startup.
Setting clock (localtime): Fri Octo 20 19:32:56 BST 2006 [ OK ]
Starting udev: _
"

Am I supposed to type something in here? Am I supposed to insert the Fedora installation DVD? I tried typing in the Password the installer asked me for and hitting Enter, but nothing happened.

The PCI error messages make me think you BIOS is not conforming to industry standards. There are several boot options switches you can use to try to get the boot to work. Boot your DVD, and enter "linux rescue at the prompt, and then do a cat `locate -r kernel.*doc.*kernel-parameters\.txt` | less to get a list of available boot-time parameters.

You can then edit your grub boot command to include the appropriate parameter setting(s). To experiment with different settings, when the GRUB boot menu is displayed, just enter an "e", and then change the boot line. (The change is only for the current boot, and not saved. When you get it to work, you'll need to edit /boot/grub/grub.conf (as "root," of course) to make the change as the default.)

For example, my boot line looks like this:where the red section is my inserted change. (I'm using a Gateway MA3 laptop.)

You could also check the HCL listings (buttons at the top of the page) for your specific laptop to see if someone has suggested the correct procedure for you.

<edit>
Oh, you might want to check your BIOS settings, in the PCI assignment section, to see if there's something you could change.
</edit>

Well first of all I attempted inserting your "pci=assign-busses" code and Fedora booted up. At first I thought I got an error message after the "Starting udev:" line, but then it said [ OK ] and booted into Fedora, so I'm now looking at the welcome screen. Thank you very much PTrenholme I'll try getting a few things set up and see if I have anymore problems, but thanks again!

Edit - Well everything seems to be working pretty well, although I'm not sure how/where to go to edit my Root in order to make that the default boot code.
I also don't know how to configure my Network adaptors. The Laptop has both Wifi and an Ethernet port, but I use the Wifi one to access my network and the internet. Can I install the Wifi's Intel drivers in Fedora? Or will I need to do something else to get that working?

O.K., a little more detail: the GRUB boot file is in "/boot/grub/grub.conf". Now, I don't know which editor you'll want to use. I use emacs, but that's only because I'm used to it, not because it's easy to use. (I started using it on Multics in the '70's, when it was one of the first wusiwug editors.)

Assuming you're using the default GNOME desktop, just log in as root, click on the "Filesysystem" icon, then on the "root" folder, then the "grub" folder, and, finally, on the "grub.conf" file. That should bring up the file in "gedit." Make the change and click "save" and you're done.

Either reboot, or log out of root and log in as a normal user. (Do NOT continue using your system logged in as "root." To do so invites unnecessary risks of damage to your system by inadvertent changes to files that should not be changed.)

By the way, while I'm glad that the "assign_busses" worked for you, that was intended only as an illustration, not a suggestion. You should file a report with the Fedora "bugzilla" for the kernel, telling them which hardware and BIOS you're using, and that the "assign_busses" was needed, so that they can modify the kernel to default to that configuration for the next person who installs Fedora on a system like yours. (Part of our obligation incurred when we use "free" software is to do what we can to make it work better for other users.)