Can't get access to anything after attempting to install
I have a Dell 9100, which, before I attempted to install Mandriva 2007 had:
105 GB Windows XP partition
40 GB Fedora Core 5 partition
In the course of installation, I chose to resize the windows partition, to give 40 GB to Mandriva. Once it was partitioning, it said that Windows will perform a filecheck on the next boot, and told me to reboot. I did... and now, when I boot from hard drive, I can't get into Windows, Mandriva (which I don't think was actually installed) or Fedora. It just pops out a message I don't remember and a command line preceded by grub>
When I entered install mode again, I looked at the size of available partitions, and the partitioning was made. The Windows partition is now 63 GB. But I can't boot it.
I really need some help right now. I'm lucky I've got Knoppix, or I wouldn't be able to even ask for help here.