Hide main screen on Windows startup

I have loaded Comodo Firewall V3 and the Main Menu Screen will not go away after Windows startup. I have tried the /background in regedit, and it still stays open until I close it. Any ideas?

Windowx XP SP3

Still can’t get rid on maintenance screen. Tried /background and -s, still shows up. Uninstalled it. Piece of … Really slows down computer.