Just had this Problem and I found the follow solution elsewhere (instantly fixed the same problem for me!!):
Try to turn off the vista's burning feature.
It's not yours or anyones burners....just an update in vista which buggered the policies up
Go to your run command and type (start.....Run.....)
type gpedit.msc
Go to User configuration/Administrative templates/Windows components/Windows explorer
On the right pane, double click on "Remove CD burning features" tick the enabled button, then OK.
Reboot or logoff/logon to apply.
If your vista version does not have the gpedit function, do the following.
Open regedit, go to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
In the right pane, if it does not already exist, create a new 32-bit DWORD value. Name the new value as NoCDBurning, and assign the value data to 1.
Reboot or logoff/logon to apply.
This should fix the problem
it worked for me
pass this round