How do I remove QuickTime as the default png viewer in Internet Explorer?

"I just stumbled across this solution, which basically involves toggling the QuickTime associations on then back off!

http://sticklebackplastic.com/post/2007/07/05/QuickTime-stealing-file-associations.aspx"

"In Windows 7 you go to Start/Default Programs

Select Associate a file type or protocol with a program.

Search the list for the .png extension. Select it and hit Change Program.

If the program you want to use to view .png files isn't shown on that list you can browse to the program you want to use.

I'm not sure if this will actually change the way IE treats .png files but I assume it will."