video file

normally in windows when i am in powerpoint, i would just play the file inside of powerpoint and it would simply work through media player. I now have quicktime, which i think is trash, so I love to use VLC player, but when inside of powerpoint the file will not play and says quicktime is needed, must i drag quicktime into powerpoint ??? also it says that more codecs are needed,but i put the permion file inside of the quicktime file after downloading it to avoid that problem so why is quicktime not working?? and are their any good conversion media programs because the file i have i downloaded from youtube and that may need to be converted to a certain type of file, but i don't know which file??/ helpp...



thanks