Wow, that is very impressive guys.

I have done some changes my self also but not much. All I changed was the case and added extra HDD. Everything stays the same, so:
MB: Asus M2N68 AM2+
PR: AMD Phenom (4 procesors) 9950+ (2.6Ghz)
GC: Asus 8800 GTS 640mb GDDR3
RAM: 8GB DD2 @ 800mhz
+ Visboard graphic pen monitor (19' - W)
+ Added 2tb to inner space for only 140 euros (so now I have 2,5tb :P)
+ Added scaner to my computer VIA USB
and in mean time made a new configuration out of old parts :P just for fun.
2nd configuration:
MB: [Unknown] S939
PR: AMD Althon(tm) 3500+ (2.2Ghz)
GC: Geforce 9500 1024mb GDDR2
RAM: Only 1024mB @ 400mhz xD
+ Samsung SyncMaster 172 (17' - 4:3)
P.S. I am using both computers, and they are both running Vista SP2. ;P
Cheers
