Every software I have seen that comes with webcams (even built-in webcams) has some kind of virtualized indicator light. It's probably a matter of figuring out where it is in the software that came with your webcam, though, as there aren't many universal webcam benchmarking tools. The stats on webcams are pretty much written on the boxes.... So, if you posted more info about the kind of webcam/laptop, it would help a lot.
-Edit-
Unfortunately, I couldn't find any info in the manual about the webcam. I also didn't see any software for the webcam on your computer's info site.
If you want something software-independent, you need to go to an electronics store and pick something up some wire, a little LED, and a soldering iron. It's going to be a pain in the take the computer apart, though. If you just want a software-based solution, there are many softwares out there that let you know when your cam is active. For example, "Camera Monitor". I think iSpy does it, also. You can also enable and disable your webcam driver in various ways. You could build a batch file to do this for you and shortcut it on the desktop.
