First off - great plugin

I wonder if anyone can help with a problem I'm having with it, tho - adding a firewall exception to WindowsXP SP2 when the exe is on another computer at the end of a UNC path. This doesn't seem to work.
In the program field I have: $SETUPPATH$\myprog.exe
And the setup is being run from a network location, with myprog.exe in the same folder.
If I display $SETUPPATH$\myprog.exe in a dialog, the result is:
\\JBPC\setupshare\myprog.exe
...so that seems to be correct.
Thanks in advance for any help.
James