1- Map Local Unit \\tsclient\C By GPO or script does not work / 2- Hide Windows security item start menu Windows 2008 r2 64bit

1- First problem (sorry for my english)

Theproblem I have isthat I can notmap thelocal driveCclientthatconnectsto my server2008R2Terminal64bitor byGPOorby script,I mean;

-If I map the client local driveCon the clientconnection RDP, it works, everything is OK.But I will notdoso,the user willreceive onlyrdpfilegeneratedby the server thatwilllaunch the applicationdirectly, soI want map herlocalCdriveautomaticallyso he cansave the applicationdataetcfrom hisremote computer.

 I get this error;When I startthe clientIseethe drive witha red X,"Failed to connect, hasattempted to accessan addressnotvalidate"I triedtomap itbyscript"net use\\tsclient\cP", bypolicy as well,within"allocationunits"withoutsuccess.....

Someonegives me a hand?Thank you!

2- Is there any way to hide the Windows security item from start menu?

I try to configure a policy like this;

http://technet.microsoft.com/es-es/library/cc770884%28v=ws.10%29.aspx

But does not work, any idea??