There're a number of options/tweaks (Visual Tweaks) in Simple Performance Boost (SPB) that only can be (un-) selected together because they share the same registry key. That's the subject of the suggestions/thoughts below.
-- They could be placed/grouped together and be given/share one option-box only as well. Move the entire group as a whole to e.g. the top of the tab. To make it clear they belong together.
-- You could reduce the amount of lines they occupy in the tab. Simply one box/option called e.g. ""Several visual tweaks that increase computer speed and are controlled by one reg value/key"" or something along those lines. Then you could move the extended explanation to the explanation pane in the bottom left hand corner.
-- SPB states that these tweaks either can be switched on together or switched off together only because they share the same reg keys. But Windows (XP) on my laptop clearly suggests that I can individually tweak/manipulate each option, each with a separate box (Start, Configuration, System, Advanced, (visual Settings)).
See attachment (this is the dutch version of the menu that allows the user to set those visual options). Or has these options/boxes removed from Vista & Windows 7 ?