Hi donald59, first uninstall the program for the camera.
go to filehippo's website and download Ccleaner and run it.
Reboot your pc.
Also get a registery cleaner from here:
and run it, AFTER you have backed up your registry.
(to backup your registery go to Start/Run/ type in 'regedit' without the ' marks and press ok. Then go to File/Export and export a copy of your registry files to 'My Documents', giving it a name you will remember).
Once you have backed your registry up, run the Registry cleaner you installed from Majorgeek website.
If you are not too sure about running the Registry cleaner then post back here.
Once you have run Ccleaner and the registery cleaner reboot your pc and reinsatll the webcam program.
If if still doesnt work right click your task bar and left click 'Task manager'. You will see the Task manager box which at the top has a 'Processes' tab. Left click this and you should see which other programs are running.