Hi!
I'm gonna turn this into a "build-log" but i'll be quick about it. First a scrot though :

Before :
* Intel "something" mainboard
* Intel Core 2, 2.2 Ghz (E4500)
* 2 Gb DDR1/667mhz ram,
* "some random harddrive" (got replaced alot!)
* Onboard VGA(or lack off!) and LAN(10 Mbit)
And now this : (picture first!)

* ASRock H61MV-ITX
* Celeron 2.7Ghz (1620)
* 4 Gb DDR3/1333
* 320GB WD Blue
* onboard Graphics (HD 2500)
* onboard LAN (1000 Mbit)
Sure it's only a dual core Celeron, but for what I use this machine for (or plan to anyway) this CPU is more than enough for me
Just wanted to share, because i'm very happy with what i've build, and very low cost too (I guess all in all, replacing everything from the old system (basicly just pulled the powercord and pushed it under my bed) I payed like $300 (- the monitor, keyboard and mouse)
So yeah, i'm happy. And the best part is... its 98% silent... Here is why :
http://www.mini-box.com/s.nl/it.A/id.417/.f;jsessionid=ac112