The response from ipswitch below does not work
You must use ftp://anonymous:a%40b.com@barton@3.planroom.tv This will pass the user and password and avoid the popup.
Can anyone help?
To login with the anonymous account on a virtual site you would use the following format:
ftp://anonymous%403.planroom.tv:pass@3.planroom.tv
The %40 replaces the @ symbol for the virtual username b/c IE doesn't accept multiple @ symbols. The basic syntax is ftp://user:pass@hostname. Since the username would be user@hostname for the virtual host we do ftp://user%40virtualhostname:pass@hostname.