John,
Yes, I had the same questions you had when trying to set up the infragistics web grid--I tried setting up the layout various ways, but I still had problems getting the grid to function properly. I am encouraged by Kevin's remarks of 7/29/05 that he is working on updating MM to work with Infragistics 2005 version 2--that should hopefully take care of it. Infragistics has improved/changed their webgrid updating process since Kevin wrote the 3rd Party Components instructions for mmUltraGrid MM version 1.3. (Message # 1036998)
Thanks for your response.