Easiest way, for me anyway, is to go into Paint.
Hit the start button, then accessories. Then system tools and click on paint.
Click on file, then open. For me, I look in My Documents, then My Pictures. Once you find the pic you want, double click on it. Then click on Image Sketch/Skew. From here, it depends on how big the original picture is, but try reducing it 35% for horiz/vert. Save image as (I have a folder titled bio page) Then try to post it in your page.
Another way is if you have photo suite or shop, click on resize. Should ask pixels or inches. Use pixels, and I always made it just a tad bit smaller than the max size limit this site has.
Hope that helps.
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If it take more than 3 bolts to hold it on, it's probably crucial.