videos as the screensaver

hi,
please could anybody tell me how to build a program that lets the user to play video files as her windows screensaver.
thx.

And who is she?

Could you explain a little bit more what you want to do?
How I can read your question
1. You want take a video, build a screensaver file, choose this file as a windows screenSaver.
2. You want to add some feature to your program, so when it is inactive it will switch to the full screen and play some Video till the key is pressed or mouse is moved. (This is easy - just take the sample code for simple videoPlayer provided in msdn, remove all unnecasery code, add timer for stating play, and stop it on some events...)
3. Something else...

hi,
the program should take a video file and somehow make a screensaver file out of it - i have no clue howto do this. please could u tell me howto start?

1. You can take the existing program http://www.axialis.com/tutorials/tut...reensaver.html
2. You can search for the SCR-file format description to build it by yourself