As a matter of fact, there is a way to achieve this even though there is no functionality in the listbox object... all it requires is a little lateral thinking.
1) When creating the multi column listbox, set the 'ColumnCount' property to twice the number of columns you need minus 1.
2) When setting the 'ColumnWidths' properties, set every other column to 10 pts.
3) If using the 'Additem' instruction, assign a vertical line (|) to every even numbered column.
4) If using the 'RowSource' property, put an extra column between each of the source columns and fill the extra columns with vertical lines (|).
Regards
Rob52