How to position plugin added fieldsets in admin

I’m trying to position the tag fieldset created by UTW under write &raqou;post and am having some difficulties figuring out how to position the fieldset outside of css, which is not what i am going for.

I tried using the javascript from post_keywords, but it didn’t work / i couldn’t get it to work.

Is there an easy way to position fieldset X, relative to fieldset Y, say just below it?