After not being able to fix this problem on my current setup i reformatted and have set up from fresh install of windows however problem remains. (windows vista ultimate)
Whenever I install Napster and then do a restart (as requested by program after install) when I get back into windows neither of my DVD drives are listed either in explorer or disk management.
If i uninstall napster and restart the drives come back.
Works perfectly on same system when windows XP used