In the Program Configuration I currently use Remote Desktop to talk to my system at work however the problem arises when I try to do the same from work. I have enabled port TCP 3389 to permit access to my home system but cannot get there with Remote Desktop from work. Any ideas for this novice? I currently use a dns service for dynamic IP conversion. This seems to be working fine.

Operating System:Windows XP Pro
Product Name:ZoneAlarm Pro
Software Version:6.0