Hey Jack, just go here...
http://www.samsontech.com/products/productpage.cfm?prodID=1810

80 bucks. Windows (SP2) will recognise it as soon as you plug it in. Works with a mac too. I use it for acoustic guitar/vocal. Quiet and hassle free.

One thing to keep in mind if you buy one. Plug it(or any usb mic) in AFTER your pc is already on. A friend of mine fried two of them before he realized that the power surge when booting the pc was doing it. So keep it unplugged when not using it.