What are you looking to do?
Windows can read most photo file types with the built in Windows Photo Viewer, and you can use explorer to sort and label them.
Or do you need a program to input pictures from the webcam? Did the cam not come with a DVD of software? It most definitely should have, or you can download something from their website? Windows 7 is pretty good at auto-installing stuff too, have you looked at your right-click options under the "devices and printers" folder?