Mine is about 5 years old...
I built it while i worked at a computer shop in highschool back in '04.
-Pentium 4 @ 3 Ghz
-320 GB HD
-3 GB DDR400 (only upgrade since it was built)
-ATI Radeon Pro 9800 (256 MB)
-Windows MCE
-Plextor PX-716A
Its been running strong, no problems yet. (knock on wood...)