All my mpegs play upside down in windows media player 9, how can I correct this problem, have reinstalled the player, codecs and still everything plays upside down. Any help would be greatly appreciated. 
uninstall any codec packs you have , just install xvid and divx codecs
Use ffdshow and set “flip video” in it and it will work
see here
http://www.click-now.net/forums/index.php?showtopic=84
after uninstalling the codecs make sure you go to your system 32 folder and delete any files that have xvid or divx in the filename before you reinstall.
Thanks guys..it worked using the ffdshow with video flip
thanx guys /// using flip video in ffdshow worked!!!
how do you select flip video with ffdshow?