Positioning of Divs

["beautiful artist" <webforumsuser@xxxxxxxxxxxxxx>]

How do I get the Main Content Div to automatically change heighth depending on 
what is on the page?  On one page I have a RSS feed that changes in length in 
the side bar section.  This is working fine, but sometimes on other pages the 
side bar may be longer than the Main Content div.  

 Also, the footer div may end up in the middle of the page rather than staying 
at the bottom.  If I set a maximum heighth on the Main Content, then it is too 
long for some pages.  Until I get this resolved I am not ready to upload the 
web site.  Thanks for your help.
 Diana Hunter