you can transfer them to cd-dvd or flash drive or an external hard drive. then when you reinstall your operating system and get drivers back in then you will be able to transfer them back to the computer
Thank you so much!you can take the drive out and temporarily attach to a working pc to salvage files . . it works best if you attach to the secondary channel, the one with the CD/DVD drives.
How to slave a hard drive: http://www.dtidata.com/resourcecenter/2007/04/23/how-to-slave-hard-drive/
You may have to take ownership of the files first: http://support.microsoft.com/?kbid=308421