nightmare...

just reinstalling Xp wont work... the errors remain as your only overwriting.. not reinstalling.

theres two ways to do this;
1 get another hard drive, and connect it thru a USB port... anf transfer from A to B in safe mode. (press F8 at startup)

and the other way is to get a copy of LINUX. (Linspire Xp2007) it boots off teh CD, and then you can use that to transfer your files, and then reformat the drive using XP disk.