Suggestion would be getting the
Celeron 566A O/C 941(if I remember correctly)
can be higher, but not advisable. -$180
128 ram is actually good enough.
(If you intend to get rams, get Siemen or Mitsubishi)
Video card, hmmm not sure for the moment.
Would recommend you to buy Microstar M/B.
Cant remember the model name if you need, I'll check for you.
Soundcard, hmmm you need one?
Harddisk, if you want, its all up to you =).