I need to upgrade the ram in my son's Gateway computer. It's an older 733mhz pentium III machine, purchased I think back in 2000. It currently has 256mb memory and is running win98se, used mostly for online gaming. I just busted the case open and found the following. Three slots for ram, two are occupied, the third one empty. Slot one has what I think was the original 128mb Infinion labeled SDRAM PCI 133-333-520. The second slot has a Kingston KGW3400/128 card. For some reason I have it in my mind that he can only go to 512mb max on this machine... don't remember why that is??? What is the best method to upgrade the memory to the max allowable? What size modules do I need? Could I purchase a 256mb module and stick it in the open third slot for a total of 512, or do I have to have a different combination of modules? Is there a specific kind that is required - SDRAM? Where should I buy it? Thanks Wayne Wanna kill these ads? We can help!