How do make the videos that I put in my myspace profile smaller? or bigger?
How do I resize videos?

Heres the solution:
you  embed your videos as usual in your myspace

Now, you go to the code which contains the code for the embedded video. In that area, look for the code which says something like: height=”###” width=”###” – it should be near the beginning.

This is the code which tells myspace (or any other site) the dimensions for your video.

Now, take those numbers and change them larger or smaller – but keep the same ratio.
For example, the  youtube videos will have a width and height of 425 and 350
You want to adjust these so that the ratio of width to height is the same, however you adjust it. In this example, if you want to make it half as big, you would make the new W = 212 and H=175.
if you want to make it twice as big, you would make the width 850 and the height 700.