Soulcatcher:
I have always found it odd that people will spend hundreds, if not thousands on a computer and then buy the cheapest mouse and keyboard that they can find.
Really? Do you sell computer hardware at an electronics store? Did your boss tell you to say that? Sorry, but I'm not buying that line.
Keyboards and mice aren't a big deal. If they're wired, type, track and click, they're fine. It's more about personal feel if you're using a USB style mouse and keyboard. There's no significant difference between a $10 keyboard/mouse combo and a $60 keyboard/mouse combo, other than the manufacturer's name and the extra money you end up spending getting that logo.
Personally, I do prefer a PS2 mouse and keyboard, but most notebooks and even some laptop model computers don't have the PS2 (or 6 pin - mini-din) ports. That's why I recommended a wired USB "laser" style mouse. PS2 mice have much lower latencies, so they are much better in a gaming environment. They are usually sold together as a combo these days and will run you around $20 - $50. If your computer has the mini-din jacks at the back of your computer (most are purple and green), you will find the PS2 keyboard/mouse combo to work better than the USB ... just avoid hot-swapping and you'll be golden.
Kat ♥