I have Acer Aspire 4730Z. Can we record a video

Yes. Software should have come with the web cam. If not or you want to try a different software, there are a number of vendors our there. Following is a link to one I found on CNet's Download.com. http://download.cnet.com/Webcam-Video-Capture/3000-13633_4-10671720.html

In shopping for this software, be sure the software will record in the desired format and beware video quality settings as video takes a lot of hard drive space.

Bret
1-2-1ComputerServices.