[TomTom]

Boosted beat me to it.
Heres a more detailed version.
Copy the normal ET desktop icon created when you installed ET, then right- click and select properties.
and edit...

Target:
"C:\Program Files\Wolfenstein - Enemy Territory\ET.exe" +set fs_game fritzbot +sv_pure 0
Start In:
C:\PROGRA~1\WOLFEN~1

To create a shortcut to a favorite map use:

"C:\Program Files\Wolfenstein - Enemy Territory\ET.exe" +set fs_game fritzbot +sv_pure 0 +g_gametype 2 +map <mapname>

and replace <mapname> with the filename of the bsp file (should be the same as the filename of the nav file).


To create a shortcut to a favorite campaign use:

"C:\Program Files\Wolfenstein - Enemy Territory\ET.exe" +set fs_game fritzbot +sv_pure 0 +g_gametype 4 +campaign <campaignname>

and replace <campaignname> with the "shortname" that appears inside the .campaign file you want to use.

You can also create shortcuts to LMS and stopwatch maps by changing the g_gametype value.
Note the +sv_pure 0 is optional except if you want to try waypointing or breaking open pk3 files.