Ok, I'm pretty useless when it comes to computer hardware so maybe someone can help me out:
I have a Dell Pentium 4 2.63Ghz with 512Mb of RAM. I would like to add some more RAM but can't find details of the RAM I've got. Can someone tell me how to find out what I've got and then where I should go to get some more? And what sort I should get?
Remember I know nothing about what goes on inside the black box!