Like many people (non IT) I have now spent way too much time trying to solve
this internet access issue.
Once I researched the workaround from this forum (uninstall latest XP Security Update) all worked well.
I was also happy theat ZA Technical reacted quickly and posted fixes/workarounds.
I have now downloaded the latest Zone Alarm Suite and when I attempt to install it I get the following error message ......
............\zaSuiteSetup_70_483_000_en.exe is not a valid Win32 application.
Operating System:Windows XP Pro
Product Name:ZoneAlarm Internet Security Suite