If you mean LLR then no you cant.

If you mean llrnet then yes, just right click on the tray icon to bring up the GUI.
You can start llrnet by browsing to the llrnet folder and double clicking llrnet.exe if you dont want to see any command windows.

Don't forget to edit the llr-clientconfig.txt first.

Note: Tray icon is really messed up in Windows 7, don't attempt to use it.