You could try to place the content that has the scrollbar you don't want in a table and set it's width to 100%, I believe that will work. If not try changing the % of the table till you see no scrollbar
That is what I did whan I had the same problem, but it has been awhile since I last messed with frames.
Just tried it with a table on www.tobycreative.com.au/temporary/holbornlenhoff/profile.htm and the problem is still there....even if I set the table width to 50%, the horizontal scrollbar remains. I have set scrolling to "auto" so I don't know why this is happening. I can't see anything else on the page that could be causing it.
I really need to get this sorted soon....damn IE! Did I mention it only happens in IE?
Obviously you dont want the table to be seen but I left it visible so you can see it.Try changing the size of your browser and it will adjust with it, so that should work in a frameset also, that is the only solution I can come up with.