i have seen many videos uploaded on youtube etc.how do you people convert these replays in videos(format like wmv,mpeg etc)?

With programs like Fraps. Then when it has recorded, load the video into windows movie maker, or ulead (or whatever video editing program you use) and then make the video.

can you give link to download Fraps?
sorry,i never heard of such tool and didnt find any in the forum.

Use google. There should be a freeware version somewhere.

thanx.i got it from google.

Here is also one that I found:

http://www.gfo2007.de/index.php?nav=downloads/details&infoID=223