Ok here goes...

I have one sata drive which I use for linux and any other OS. Grub is in the MBR. The drive has 4 partitions. Part 1 is an 11 gig hd for hopefully XP 64. Part 2 is a swap drive for linux, part 3 is my Sidux 32 bit, and part 4 is my sidux 64 bit. I have a CDROM. I have saved my MBR with grub in it, to my linux drive. If anything goes wrong with the MBR, I can restore it using a Live CD, and the backup.

If I try to install XP it does not see my sata drive. The drive has been set up in BIOS as being a IDE, but I tried it also as a SATA. I have used my device driver for my sata controller. Both times the drive is not seen. I even tried without the driver.

The XP install cd is bootable. Is there such a way to use grub to boot the cdrom, and somehow make sda1 to look like hda1

Thanks

1:
What software did you use to make the partitions?
2:
Why did you install grub? you should have made the XP partition active and installed XP first, then install a Linux after to install grub.
3:
You should try and keep Windows partition around 15GB, no more than 2GB for swap, 12GB for each Linux. And make a shared NTFS partition with the rest so you can store all data in it and have access to it from any OS using ntfs-3g in Linux to read/write to NTFS. This way you can have DVD sized files, handy for downloading a Linux distribution.

Or are you saying you want to "re-install" XP? clarify.