@Pinhedd: the source is my own counting. I literally counted the pins and there are 112 pins on each side of the slot, for a total of.... 224
@Agera One: I was thinking about 4GB of RAM as long as it costs me less than $50 (including shipping). Oh, and I only want NEW memory DIMMs (that come with waranty), not used ones. As for the site, I have no preference. I checked Amazon cause they are bigger and have good prices but I'm not too strict on where I will buy the memory as long as I find 4GB of RAM that work on my PC, that come with warranty and which are reasonably priced (less than $50 as I said)
@anort3: I know it's harder to find EXACTLY my type of RAM (DDR2 with 224 pins that is). Obsolete?? Not at all my friend
I actually did find quite a few PC2-6400 (800MHz) DDR2 DIMMs that work in Dual Channel (like my MB supports). The problem with these DIMMs is that they ALL have 240 pins. I am at work now, but when I get back home (in about 6 hours or so) I will take a good look inside of my computer and check if the RAM I actually have mounted on my MB have 224 pins, or something else.