How to set different column widths in TABLE

I am trying the code (lifted from another site) below make a simple table to contain BOM data.

I need to make each column of different width. The "Description" column needs a wider column than the "part no." column.

Is vla-merge the right way to go ?

All help is appreciated.

(setq myTable (vla-AddTable 
                   *ms* 
                   (vlax-3d-point pt1)
                   (+ 3 cnt)
                   3; number of columns 
                   0.7 ; row height
                   2.5)) ;column width
     ; the next three lines set the header text
     (vla-setText mytable 0 0 "Bill of Materiale")
     (vla-setText mytable 1 0 "Part Number")
     (vla-setText mytable 1 1 "Description")
     (vla-setText mytable 1 2 "Quantity")    

Use the SetColumnWidth method

Click Here for sample code