Grid management with surrport for hierarchical data and frozen column?

I'm trying to find a way to display hierarchical data (3/4 levels of nested data) in a grid (in IE6 +).

• I want to show hierarchical data with vales for all columns of parent and child nodes.
• Also I want to freeze the first two columns in the grid.
• Be able to expand (expand) the grid view by loading data on request (ajax)
• looking at the loading grid with sizes ranging from 800 to 1000

I've seen several jquery grids where it doesn't support freezing columns and other third party controls (infragistics) generate so much javascript that along with the first IE of the column it freezes as well.