First Time Building - Quiet, budget computer

[UsernameTaken]

I am looking for a low-budget, quiet PC. I will most likely run some form of Linux, and possibly dual boot with Windows. It will be used for surfing, IM, word processing, and BitTorrent as well. I'm thinking for the CPU this will be fine and might even be a little bit overkill. 1 GB of RAM will be just fine, correct? The only gaming I do is emulation of things like GameCube, etc. It is nothing special, I am just replacing a laptop with a desktop so I can give the laptop to someone who needs it more. This will be my first built computer and I am a little nervous but moreso excited. I know I will have trouble with partitioning the HD and doing things with the BIOS etc, but other than that I think I will be fine as long as I don't break any components Any tips for new builders would be appreciated.