My set up:
Silverstone LC17 case with 430w PSU
AMD 5200 Brisbane 2.7Ghz Dual core cpu
Albatron K8SLI-AM2 Motherboard
Asus 9400GT Silent
600gb WD Sata 2 HDD
Huappagge HVR-3000 (Have spent many hours trying to get it to work in MediaPortal, will work then just fail next reboot,rather depressing....)
Skystar 2 Sat Tuner (Was using for Sat TV in MP as MP would lock up when switching the HVR-3000's tuners)
Pinnacle Bt878 Tuner (for HVC+ in XP ;-) )
Can now take the Skystar 2 out and put it back in my other pc =) I'm also very impressed with MediaCenter actually working! The HVR-3000 changes channel almost instantly even when changing from dvb-t to dvb-s or to analauge.
Overall I'm so far very impressed with Win 7, only hiccup has been that it would BSOD in setup on my gaming pc so unfortunely back to XP on that...Other than that Well Done Microsoft!
Are there any cool plugins you can get with Media Center? Like can you do PIP or anything? =)