Vista - XP System Restore from Vista Dual-Boot

I hope this is the correct group for this question. I've searched the groups
for a solution; a couple of posts were very similar to my issue, but
unfortunately not exactly.
I have a dual-boot box. XP installed first; Partition Magic to create
smaller partition for Vista, and Vista BootPro installed as well. I primarily
use XP and that is where all of my data currently lives. I can no longer boot
into XP, even via Safe Mode3 or Last Known Good Config: I get up to the
"Starting Windows" screen and it hangs there. Is there a way for me to revert
to an saved Restore Point for XP from Vista?
Any help would be greatly appreciated and I'm certainly glad this group is
here. I planned a full move to Vista today but must access XP to export data.

Thanks in advance,
Ruwiten7