I tried for days to get Soundtap to work but with no luck. Then I realized that Vista has a User Account Control program running as part of its Security and thought this may be interfering with Soundtap. I shut it off and now Soundtap is working fine.
Go to the Control Panel
Go to the Security Center
Open up Other Security Settings
Click on User Account Control
Do a search for "Turning Off User Account Control"
Select "Turn off User Account Control"
Select "Click to open User Account"
Then turn off your User Account Control
This may be a bit of the long way around to get to User Account Control but it works.
Good luck!
lfmwriter 