Welcome to TG forums SteveL (... this is like talking to myself)
Like many legacy apps, to install them and run them successfully under Windows Vista you often need to start by installing and then on first run 'As Administrator'. (right-click installer, select 'Run As Administrator' - accept UAC promp. Once installed, right click program shortcut and select 'Run as Administrator' - accept UAC prompt.)
This allows the app to access the better protected Windows registry under Vista, and write the necessary values.
Once this is done, there should be no problems.
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