data recovery

Hello!
Yesterday, while after trying to install RedHat on my other partition on my HD, I tried booting off of that partition, and I received an error saying "Error loading operating system". After that, while trying to boot up my regular partition (XP), I got an ugly error (blue screen with addresses in memory), and I could not load or access that partition since. I tried to access it somehow by merging it with my current partition using PM 7.0, but I was not able to. I have some data on that partition that I would like to retrieve before I reformat everything and reinstall XP. Does anyone know of any data recovery software? My problem is that that partition does not have a drive letter assigned to it anymore, and when I try to assign it one, I get another error,... so it's like running against a brick wall.... there's gotta be a way, though, because that data is still there. Any help would be greatly appreciated!
All the best!
Vlad
PS: since yesterday, I wiped off RedHat, and installed XP on that partition, so this is how I am able to post this.... Thanx for the help in advance!
 
Thank you for the welcome! It looks like a great place! I hope you're right, and that someone may be able to help!:)
Cheers!
 
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