Drivers wont install???

[cuegt]

I've got a dell desktop that i had to reinstall the os (windows xp). The install went as planned but the device drivers won't install. I have the original drives disk, and when i put it in it goes through as if the drivers are installed, but when i check in device manger it has no drives installed. I'm just wondering should i just do a complete re install, or is it a chance i have a bad drivers disk. Any help would be greatly appreciated. thanks