Up until now i haven't looked at this small app.
Now i have, i realise how handy it is to allow shards that require patching to make a small folder with this application in it with a pre-configured version of the config file for there shard.
This is what i have done for my own shard and it's saved me time doing so. Now all my players (if any) need to do is download 1 RAR file and run the UOLauncher application, because the config is setup for my server, patching happens all automatically and the game launches when done, simple really.
I'd recomend you check it out, it's found in the RunUO forums in there 3rd part app section.