I installed a trial version of ZA yesterday. Since then I receive this message when I try to post to a discussion forum:

"The host from which you are accessing the board is not recognized as a valid host. This is more than likely related to a firewall issue that is blocking the referer variable. Check your firewall settings and try again."

I am a total novice and know very little about the technical workings on my computer. Please, if you have patience and can talk me through this 'problem', I would be grateful.

Thank you!

Operating System:Windows XP Home Edition
Product Name:ZoneAlarm (Free)