Yes, I was aware of the addRowData function. But what if I don't have the info on the columns? Can I get that information somehow? I tried getColProp(), but that just gives back and object that has no properties in Firebug.

Edit: Oh, right, never mind the bit about getColProp, just clued in that I have to supply it with a column name. Still looking for a way to get the number of columns of an existing grid.

Thank you!