I forgot to add, the Motherboard (mobo) I got came with a Gigabit LAN adapter and sound card built in.
Sound and Network both worked ace on it!
It looks like we can help you select your components if you have a price range in mind and want to self build ^_^
CPU
Mobo
RAM
Hard drive
Network Adaptor (get it on the mobo!)
Fans
Case
Sound (get it on the mobo unless you are some sound fiend!)
GFX
DVD drive
(assuming you already have a monitor\keyboard\mouse)