I downloaded and instaled "mt32emu_winMMdrv_2011_06_10.zip" in some computers with the following OS's: Windows 7: W7 ultimate 32: phenom 8400 x3, athlon 64 x2 5200+ (it worked fine) W7 home premium 32: pentium e2160, pentium d 820, celeron 420 (it worked fine) Windows xp: WXP Pro: sempron ...