not sure if this is what you want but...
if you want a column of checkboxes, one for each row then you could use the mousecol and mouserow properties of the flexgrid in the click event
code would be something like:
(if column 10 is your column of "checkboxes"
private sub grid_click()
if grid.mousecol=10 then
if grid.textmatrix(grid.mouserow,grid.mousecol)="X" then
grid.textmatrix(grid.mouserow,grid.mousecol)=""
else
grid.textmatrix(grid.mouserow,grid.mousecol)="X"
end if
end if
end sub
This will give you a check box effect - clicking on the grid in row 10 toggles an X in it - then you can look at the value in the grid to see which rows have been checked.
(most of this I picked up from Mike James in Computer Shopper magazine in the UK a while back)
Hope its useful, otherwise feel free to ignore