bought a new acer 24" widescreen, and i set up maximiser properly, with left half for main, and the other half split into quarters for the other 4 accounts.

now when i start the first account it comes up fine, filling the left half of the screen, but when i start any of the other 4 accounts they load up on top of the other copy, so they load up on the left side of the screen too, any help?