Disable screen saver in Vista using Windows media player

I know how to do it in Windows Xp.

But now i have Windows Vista and i don't know how to do it.

When i have windows media player on and i am watching a film or listening ti music and i am not moving the mouse the screen savers enables?

How can i disable the screen saver when i am using Windows media player.

i don't want to permanetly disable the screen saver?

 

someone pls help?

 

Yeah, i had a similar problem with Vista, only not with Windows media player (it worked fine, disables screensaver during playback), but with Media Player Classic. But it wasn't the screensaver that would start, but the monitor would shut down after 45 mins of not moving my mouse (it is set to do so, but i don't expect it to if i watch a movie). I found an edition of MPC which has this problem fixed, so now i use it for watching movies. If you want to give it a try, just go to http://www.jtow.net/users/triess/ , and the player can be found near the bottom of the page (dude says it's his personal edition).
Hope it helps.
Cheers

 

so how am i able to disable the screensaver when i have windows media player on?