Hi Anth Depending on how you disabled the devices initially, I would just have the counteractions within login scripts. I had a similar scenario last year and I basically created two Login scripts - one for administrators (unrestricted) and one for Users (restricted). Each script then points to an addition .reg file. For additional security, changing the permissions for the USBSTOR also came in handy although you will need to download SubInAcl.exe for this. Here is an example.... To Restrict First of all, create a .reg file and copy the following information: REGEDIT4 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR] "Start"=dword:00000004 Now save the file into an accessible location - we'll use C:\dword4.reg in this example. Once you have obtained the SubInAcl file, I would position this in the same directory. Within the logon script, type the following: :: *********DISABLE USB MASS STORAGE DEVICE******** regedit /s "\\SERVER\C$\dword4.reg" "\\SERVER\C$\\subinacl.exe" /keyreg \system\currentcontrolset\services\usbstor /deny=system To Enable Again, create a .reg file and include the following: REGEDIT4 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR] "Start"=dword:00000003 Save this file into an accessible location again - we'll use C:\dword3.reg in this example. :: *********ENABLE USB MASS STORAGE DEVICE******** regedit /s "\\SERVER\C$\dword3.reg" "\\SERVER\C$\\subinacl.exe" /keyreg \system\currentcontrolset\services\usbstor /grant=system Hope this helps Ray _____ From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On Behalf Of Ananth Rajagopal Sent: 17 October 2006 11:58 To: gptalk@xxxxxxxxxxxxx Subject: [gptalk] how to block removable USB storage devices Hi, This is my first query, won't be the last for sure... I'm working in an Animation studio, we have a policy here of blocking all USB drives, along with FDD and CDD. But we are getting some Pen Tablets, and all are USB devices, so obviously we will need to allow enable USB ports, is there any way to block users from connecting their removable drives and copying data using Group Policies? Kindly advice..in detail :-) regards anth