Wi-Fi Sync Not Working

I have an iPhone 4, iPad (original), iPad 3, and iPhone 5, and none of these are showing up in iTunes to sync wirelessly. All are on the latest iOS and iTunes is version 10.7.0.21. I have read various threads here with the same complaints(links listed below), tried all of their solutions, tried various things with my router, firewall, and antivirus, restarted everything possible, tried all of the solutions offered by Apple at the link at the bottom of my post, and none of these have solved the problem. Where can I get help for this?

http://support.apple.com/kb/TS4062

https://discussions.apple.com/thread/4349257?start=0&tstart=0

https://discussions.apple.com/thread/4316898?start=15&tstart=0

https://discussions.apple.com/thread/4349847?start=0&tstart=0

https://discussions.apple.com/thread/4369022?start=0&tstart=0

https://discussions.apple.com/thread/4356047?start=0&tstart=0

https://discussions.apple.com/thread/4365107?start=0&tstart=0

https://discussions.apple.com/thread/4369565?start=0&tstart=0

and so on.