What is your laptop model?
Go to http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/home.jsp?nav=Download
and enter all the details for your laptop model, after that, download the webcam utility.
If you already have the webcam utility, click start, programs, toshiba (anything that looks meaty) then click on the program that is labeled as a web cam software, you may have a cyberlink software installed.. check for cyberlink in programs too.
I can't give you a detailed desciption without knowing the model of your Toshiba laptop.