You can get another drive and load XP on it. Then make your old drive a second drive in the system. Then copy all of your data over to the new drive. Or you could just reload XP in a different directory on the drive you have now. You shouldn't have to reformat.

M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM