a website wants to open web content using this pgm on your computer

This is strange, but when I go into my picture files on my computer and I want to email them them a box pops up with a big yellow warning saying that a website wants to open web content using this program on your computer. It is from IE7.
Says the host process is (rundll32) from microsoft and the file is
program files/movie maker/wmm2clip.dll
It asks me to allow or not allow it. I have always checked not allow but it keeps popping up and being really annoying!! If anyone has any information about this I would appreciate it. I am running windows vista 32 bit....Thanks...

whats your email program? (windows mail, outlook or something else)

I have yahoo. so it is sbcglobal.net. I do not use windows mail or outlook, although I do have both of them? Why?