vertical scrolls in multi column listbox

i repharse my post here...
the idea is to show the color boxes as they show in the standard color dialog, but the need here is of a control that cud include vertical scrolling as well. the control has to display a large number of colors in "boxes" say 256, so a scrolling mechanism is a must and to add the misery a vertical scrolling is a must :).
other links on CG have used either static controls or used a lesser number of available colors to display that dont need scrolling at all.
there must be some way to put a vertical scroll bar in a multiple column listbox, or may be i cud use some other control instead like the list ctrl..... any ideas for it???