iE help

I had problems with Firefox it always closed and had Errors.
So I whent back to iE.

When I used Firefox I had a Plug iN for it that wen I went to Youtub and wztched a video an Icon would go in the top left of the video. And wen I chicked it it would let me Download the video as MPEG 2. and things like this.

Is there something like this for iE?????????
 
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