Parts have arrived 2 days ago.
The system will be:
CPU: AMD Athlon II x2 240 (AM3)
Mainboard: Gigabyte MicroAtx w/ AMD Chipset. AM2+ (AM3 ready)
RAM: 2GB Kingston DDR2 CL5 (2x1GB)
VGA: Gigabyte ATI Radeon HD4670 1GB (w/ Zalman Cooler)
HDDs: 500GB Seagate Barracuda SATA2, 640GB Samsung F1, 500GB Hitachi (external Iomega), 320GB Hitachi (external LaCie, slim). All from my main PC (will leave 2x160GB Samsungs alone. Should be enough for few more demanding games).
ODD: Not sure. Either Optiarc DVD-RW from my secondary or LG BD-RE from my main PC.
FDD: What ?
PSU: 400W FSP (not much room for expansion).
Case: some generic ATX tower (old case of my main PC, before upgrading to Antec 900).

Will probably start building tomorrow. Will post an update when the new system will be completed (or maybe earlier).

Happy holidays everyone !!