I was wondering if there's any way to create a toolbar that docks on
top of the windows tast bar and shows up in the "toolbars" list.  I
noticed that Google Desktop Search has an option to add a search box to
the taskbar (fully dockable/floating etc), so it looks like it must be
possible, but I haven't been able to find a way to do it.  The closest
I came was a sample ApplicationBar, but this could only dock over top
of the taskbar, not "inside" it.  Ideally, I'd like to create something
similar to what GDS has, which is selectable from the context menu, and
which can be used in either a "docking" or "floating" mode.  Is there
any way to do this?  

Thanks in advance for your help!

Chris