I use Outlook 2002 and I can't send jpg or bmp attachments.
I assume Zonealarm is the problem but I can't work out why.
I've checked and neither jpgs or bmps are on the blocked list.
However, if I switch Zonealarm off I can send attachments without a problem.
This is driving me nuts so please help me sort it out!

Operating System:Windows XP Home Edition
Product Name:ZoneAlarm Internet Security Suite