I've updated the following skins...
LongHorn
+Toolbar background (Gradient is now light to dark to light)
+Options window has new black tabs to match the scroll buttons
+Adjusted Tool bar button hover size and color
+Trans. button relocated since its not visible under Win9x
Slate
+Caption bar now has sculpted effect
+Scroll bars modified (added gripper and changed buttons)
+Trans and rollup buttons swapped since not visible under Win9x
SmoothLime
+Relocated Trans button since not visible under Win9x
+Fixed Scroll bar and Scroll button issues (please report problems)
SmoothVista
+Mostly bug fixes
All skins have minor bug fixes and smaller file sizes.