ZoneAlarm Firewall blocks my internet on "high" security. Help pleaese.?

While using ZoneAlarm Firewall I have to run 'Internet Zone Security' and 'Trused Zone Security' on the Medium setting to allow Firefox to load pages. If I turn 'Internet Zone Security' on HIGH, pages will no longer load. Why does this happen, and how can I run on high and still be able to play online games as well as browse the internet, use torrents, etc. Firefox, WoW, Bitlord, etc, are all allowed by ZoneAlarm so I don't see why it doesn't work.

Also: I have the infamous Ultimate Defender/Cleaner/Fixer Trogan on my computer and I don't know how to get rid of it. I have Adaware '07, which detects it, but when I try to remove it, it just apears again with another scan, so I tried quarentining it to see if that does anything....

ZoneAlarm Firewall blocks my internet on "high" security. Help pleaese.?virus removal

IMPORTANT!! Turn off System restore First before do anything.

1. Click Start, right-click My Computer, and then click Properties.

2. In the System Properties dialog box, click the System Restore tab.

3. Click to select the Turn off System Restore check box. Or, click to select the Turn off System Restore on all drives check box.

4. Click OK.

5. When you receive the following message, click Yes to confirm that you want to turn off System Restore:

You have chosen to turn off System Restore. If you continue, all existing restore points will be deleted, and you will not be able to track or undo changes to your computer.