Creating Reports with Reportviewer

Help with ReportViewer
Am just starting with Report Viewer (VS2011 Beta) and need some assistance.

In my design have a Table with Group, Body and Group Total sections.

Question is - How do I split the table so body has different number of columns and different column widths than Header.

Here's what I want to accomplish....
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Really need help on this - can't find much documentation or examples to follow.

Thanks