I have already sent links to documents on MSDN that state how to make a service run on an interactive desktop. As some of the tests are a little distracting graphically, we should probably do the dialog as you suggest. I guess this is really up to the people running the test machines. If the source to winrash was in the Wine tree I would already have fixed it by now.
The source has been available on Sourceforge since the project started. Patches welcome :-)
I'm certainly open to having it imported into the wine tree if there is some desire.
Chris