Thanks for your reply!
I have installed the jars below from the Richfaces 3.2.0 snapshot:
When using <rich:columns> in scrollabledatatable, it seems that the columns are created, but there are problems with displaying in the browser. (i.e IE7 , Firefox).
After the page is completly loaded, the screen becomes 'blank'.
I have put some screenshots in the attachement: rich_scrollabledatatable_dynamic_columns_using_rich_columns.doc
Are there some additional steps that i have to take, or is it just waiting until the 3.2.0 release?