Ok, friend of mine sent me an .avi this morning of a monster striper
he caught off of Martha's yesterday.

Since I upgraded Quicktime to Quicktime Pro and installed iTunes, I
can't open .avi files. The QT player will open, but it doesn't play
the video. I took another .avi with my cellphone camera and it won't
open or play that either - just a blank screen.

It also won't play in Windows Media. It will open, but the video
won't play. However I do get sound.

WTH? This all started with the upgrade and the new version of iTunes
- avi's used to play just fine and dandy in Windows. QT won't play
mov either.

The other issue is that all .jpgs now open in QT. I can't switch it
back to the Wiindows display.

Any ideas on why that happened?

And how to fix it?

Final comment - Microsoft isn't the Devil, it's Apple.