You can make a description.ext with wordpad, word, notepad, dos editor, whatever. Just remember to save it as description.ext and no other extensions. I use notepad.
Also remember to place the description.ext in your mission folder /ofpdir/users/youruser/missions/yourmission/ or if you're using the mpwizard ofpdir/users/youruser/mpmissions/yourmission/
In the description.ext put simply
respawn="base";
respawndelay=20;
In the editor place a marker named respawn_west to the place where you want to respawn.