Hopefully this should sort the problem...
In Active Directory.
Right click on 'Students' and select 'properties'
goto 'group policy'
Highlight 'students' in object links and then click edit
This will open group policy object editor.
Under 'user configuration' select 'administrative templates'
select 'viglen' and then 'windows components'
In the 'windows explorer' select the 'Hide these specified drives in My computer'
drive code for usb should show '2044'
To stop the little .... using usb use the drive code '66191356'
The only thing you need to be sure about is that what drives you want them to see... this will allow a, b, r, s, t.
Ps very good idea to write down all chances made!!
Hope this is of help.
