Use Remote Assistance to view and remotely control an active user session. You can remote control a logged-on user session under the following scenarios :
For information on how to upgrade to RDC 7, see Microsoft KB969084 (http://support.microsoft.com/kb/969084) **If the User Workstation is RDP 6.0 (mstscax.dll 6.0.6001.18000), the following patch is recommended:
Microsoft KB976110 (http://support.microsoft.com/kb/976110). *** If the User Host Desktop is XP or 2003, color depth for the session must be set to 16-bit color.