I installed Windows 7 32 bit on a 2003 m380n Media Center with XP(sp3) Pentium 4, yes! The old GeForce 5200 Graphics card and the Happauge TV tuner didn't like it too much, so I ditched them. Many PCI cards are available for this old rig. I chose the sparkle GeForce 8400 GS 256MB 64 bit GDDR2 card and hooked up a second 19" monitor. I also installed the WinTV-HVR-1600 PCI Tuner. I thought I got the one with the FM Tuner, but It doesn't have it. That's ok though. Everything is Smooove!