I had a similar problem a few years ago when living in a large apartment complex. I tried to go the humane route and get the powers-that-be to have someone come out and relocate the little ba$tards...they weren't any help. They told me to 'put some ammonia down' and they would vacate the area.
Yeah right...after I got gassed a couple more times I decided to fight back...
Step 1: Find out where the skunk burrow is
Step 2: Giant Destroyer
Step 3: Have a beer on the back porch whilst breathing fresh air
http://www.ruralking.com/poison-gas.html
(All local laws and ordinances should be checked before executing Step #2)