> I still use Windows Xp in dual boot 'cause all Nvidia driver are buggy in Windows > Seven. Tv out (using component cables) and 15Hz are all relegated to Windows Xp.
The original poster *is* using Windows XP. SP2 for god-knows-what reason.
But, yes, Windows 7 is all kinds of messed up when it comes to 15KHz monitors. Personally, I use Windows XP 64-bit edition for my arcade monitor.