The following code is working:
Allow Remote Desktop Help Session Manager
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RDSessMgr]
"Start"=dword:00000003
Allow RDC and Remote Help
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server]
"fDenyTSConnections"=dword:00000000
"fAllowToGetHelp"=dword:00000001
Open some Firewall ports for RDC
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List]
"3389:TCP"="3389:TCP:*:Enabled:@xpsp2res.dll,-22009"
"139:TCP"="139:TCP:LocalSubNet:Disabled:@xpsp2res.dll,-22004"
"445:TCP"="445:TCP:LocalSubNet:Disabled:@xpsp2res.dll,-22005"
"137:UDP"="137:UDP:LocalSubNet:Disabled:@xpsp2res.dll,-22001"
"138:UDP"="138:UDP:LocalSubNet:Disabled:@xpsp2res.dll,-22002"