>A better idea would be to put a Setup Wizard runtime install out on the network and use the same approach (a runonce key) to actually run the Setup Wizard installation; this ensures that files are copiued into place properly and registry entries are updated, etc.

Ed,

Unfortunately our client's only have power user login authorization. If the update of runtimes require any registration then I'm sunk. Using the Setup Wizard approach would require admin login.