How to change the screen size of my video?

I converted AVI movies to WMV with a free program and i want to change the screen size, it has no this function , what should i do?How to change the screen size of my video?
Hi, Sog Video Converter Platinum can help you out . and its very easy for that .



Please download this software at : http://www.sogsoft.com/softdownload/sog_



and you can define the screen size of your video by selecting ';Customer Size and Keep Aspect Ratio'; option in the ';Output Image Setting'; area, and then set the ';Video Resolution(W:H)'; at the right side.



If you have any more questions, please click this link : http://www.sogsoft.com/guide.htm to find your answer outHow to change the screen size of my video?
I think you should change another better converter RZ Video Converter which can convert avi to wmv too, and can customize the target video resolution, I think it can fit your demand, but it isn't freeware, if you will, you may have a try, it also can convert any videos or audios between different formats. Yahoo or google search and download rz video converter, easy to use.
Doremisoft Mac Sansa Video Converter , it also has powerful functions to edit your video, such as crop the size of play region to remove unwanted sides, cut any time-length clips from video sources, at will to add or minus video clips on this tool, join your selected files into one successive file, take snapshots for your favorite pictures, rotate play video directions randomly.

http://www.zimbio.com/Free+Video+Convert