I have a domain running SBS2011 with an extra 2008 server running the Remote Desktop role.
When my users connect externally to Remote Web Workplace with "REMOTE.DOMAINNAME.COM" and log in to their workplace there are no computers available for remote access under the COMPUTERS tab!
If I log in as SBSADMIN I see my Remote Desktop Server and I am able to connect.
This sounds like a pretty simple problem with a missing right or group membership but I just can't see what is missing.
I made the group DOMAIN USERS member of the REMOTE DESKTOP USERS and I can confirm that all users is a member of "WINDOWS SBS REMOTE WEB ACCESS USERS" group