Hi,
Yes, Windows Server 2008 R2 can do auto remediation. For this you need RDC 7.0 client on the client machine, which is default on Windows 7. RDC 7.0 will be released soon for pre-Win7 operating systems.
BTW, For RD Gateway related queries the right forum is
http://social.technet.microsoft.com/Forums/en-US/winserverTS/threads/Regards,
Rajesh.
Regards, Rajesh.