Hello,
I have a multiboot - Windox XP and CentOS
I've been using this for about a year now. When I boot I come to a screen which lets me choose which OS i want to load.

However, today when I turned on the PC i got the following message:

GNU GRUB version 0.97 (639k lower / 1039336k upper memory)
[Minimal BASH - line line edting......]
grub>

Any suggestions on how I can get the system back to screen in which I can choose which OS to load?

thanks,
Joseph

That sounds like grub error 7: quoting from the grub legacy manual:
In your last session before the error occurred, did you do any partition resizing or configuration changes, especially to the grub config file /boot/grub/menu.lst (or possibly /boot/grub/grub.cfg in Red Hat family Linuxs)?

The only suggestion I can make is to try your install cd. Does is work as a liveCD also? If so, try booting the liveCD. When you get to the menu, look for an option to boot from the hard drive. If there is one, you may be able to boot into CentOS. Once there, try removing then re-installing grub. Or, better yet, remove grub and install grub2.

The problem you have is in grub itself. Upgrading to grub2 should fix that problem.

Hello Bigrigdriver,
I have not touch any files in any way. The last thing I did was I was in WinXP. I did DL a software. I didn't like the software so I unistalled it. I surfed web for a bit and turn of PC.

I'll try the other suggestions you made once I find the install CD.

thanks,
Joseph

In contrast to @bigrigdriver, I think that is a generic message from classic grub when it's "broken".
Coming to a prompt like that usually means it can't find its stage files. The liveCD option is good, but I don't know what CentOS does (been too long since I looked at it). It would be interesting to find out if it can see you (hard) disk install.

From the liveCD try these commands for us and post the output (as root in a terminal)