Screenblast acid 4.0 and sound forge 7 won't recognize cd drive?

[ingeborgdot]

In and audio broadcasting machine we have screenblaster acid and sound forge that have been working for the last couple of years.  A couple of weeks ago when we went to record it says no devices.  What is causing the conflict?  The player will play cds and we also tried a new one but it still does the same thing.  It is on an xp pro machine.  Can anyone figure this one out?