Task Bar visibility

Hi! Has anyone had this problem? When I run my program that has
multiple forms, in the "on activate" of each one I maximize the
form, but in several forms, the lower half of the Windows 95 task bar
is still visible and can be selected. It seems that the maximize is
not fully maximizing or the coordinates are wrong. I use the same
code for maximizing in each unit, yet only some of them have this
problem. Help!  Thanks!  

                   Jennifer Restrepo