Problems w/ Installation

I am having trouble installing PT3. I have tried three times and gotten the same error each time. I am using Vista and have set PT3 to run as admin, as was suggested.
This is the error I got from the log: (programfiles/postgresql/8.3/tmp or something)
The application has failed to start because its side-by-side configuration is incorrect. Please see the application
This is the error I got from the log: (programfiles/postgresql/8.3/tmp or something)
The application has failed to start because its side-by-side configuration is incorrect. Please see the application