One thing you might want to look at when thinking of upgrading your memory. Consult your computet or motherboard manual to see how many slots you have for memory. Then see how much memory your motherboard can handle. For instance, let's say your computer has two memory slots, and can handle a max of 2GB of memory. You could buy two 1GB memory modules to max out the memory. Or you could buy 512MB at a time, and go to a total of 1GB, over the long haul. If you already have a 256MB module in the motherboard, things get complicated. If you only have two slots, you'd need to dump the 256MB and get two 512Mb modules. That sounds pretty tricky, unless you happen to have two computers, and like to swap stuff.