Here is the list of operating systems for the MM DSP boards with MC 6.x SDK:

Desktops:

XP: Yes
Vista: Yes
Windows 7: Yes ( 32-bit only ) - Release 6.7 and newer

Server:

Server 2000
Yes
Server 2003 Yes
Server 2008 Yes ( 32-bit only ) - Release 6.7 and newer

Notes:
N1: 64-bit not currently scheduled for the DSP MM boards
N2: RAM should be limited to 3.5 GB for 32-bit OS ( add /maxmem=3500 to the boot.ini file )


Here is the list of operating systems for the HMP boards and VoIP only (ie applies to AoH / HMP licenses)

Desktops:

XP: Yes
Vista: No
Windows 7: Scheduled for January 2011 ( 32-bit and 64-bit )

Server:

Server 2000:
No
Server 2003: Yes
Server 2008: Scheduled for January 2011 ( 32-bit and 64-bit )

Note: RAM should be limited to 3.5 GB for 32-bit OS ( add /maxmem=3500 to the boot.ini file )