I had to use Daniel_K's
driver pack (There are links on these forums) to get my Audigy 2 ZS working in win 7 64bit and it now works a treat. Infact when i first put the Audigy in Windows installed it's own basic
driver for the midi port and WDM
drivers for the card. I just prefered having some proper
drivers running.
In the process of trying to find the solution i was told many times that Microsoft had stopped support for the old midi interface once Vista was released but i refuse to believe that seeing has i have mine working.
Oh i also run a XFi Xtreme Music card as my main output device