there's really no special integration required in order to do it. I simply create a FreeStyle project and add windows batch commands. The batch commands start ArtOfTest.Runner.exe and pass it the appropriate test. This is probably what you're doing as well.
Obviously, there's a lot more configuration/setting up required but that will depend on the particular situation.
Unfortunately UI testing offer some unique challenges. The Windows OS chooses not to render some UI elements when it deems on one is looking and that gets to be a problem. In order to avoid this you'll probably need an active desktop connection to any Hudson slaves you intend to use for testing. The Desktop connection will have to be open while you're performing the tests, don't even minimize it.
Of course you'll also need to be logged in with an administrator account to your slave machines (sleep and locking should be turned off).
Could you please give me the error message your tests generates on failure - it might hold some clue as to what you're doing wrong.
Hope to hear from you soon!
the Telerik team