I've been using a Dell desktop with a P-III 600 mHz processor for several years now, and it's generally suited my needs fine. However, I'd like to add some RAM beyond the 128 MB it was originally installed with. These days, with designations like SDRAM, RDRAM, Rambus (are they all the same?) floating around, I've got no idea which kind I need to buy. Is there a way to figure out which type I've already got installed? (I'm not the type who does much under-the-hood tinkering, so I've got no idea....) All help is appreciated.