The tweaker does not modify registry keys (except it's own settings). It injects a dll to explorer, and hooks some functions.
Would it be possible to make a version that makes the changes permanent? This is a great program, but it's annoying to have to run it every time I turn my computer on.
Updated, with some interesting features: Reordering of taskbar buttons within a group. Per Application ID grouping/labeling. Multiple windows close/minimize/cascade/tile/etc. Grouping whatever you want with whatever you want! See more here: hxxp://rammichael.com/7-taskbar-tweaker-update-v1-5 hxxp://rammichael.com/7-taskbar-tweaker-v1-6 A demonstration video: hxxp://rammichael.com/wp-content/uploads/2010/12/demo.swf.html P.S. Sorry for the hxxp, I do not have 20 posts required to post links.