Who's a nerd?

So last night I decided it was time to upgrade the RAM on my computer. I've got too many programs running silently to leave it any more. I got my manual, checked and double checked which type of RAM my system uses, then headed to Best Buy. They had exactly what I was looking for. At home I popped my little card into the motherboard and fired it up. 1280MB of Ram, muahaha!!!

.........system failure.

"What!!!!"

.........not enough memory to run this progam........failed to read to drive.........critical failure in.......

There goes my complementary bow tie and pocket protector. Now I have to trudge back to the store with my manuel and the RAM card to see what I did wrong. ~whimper~