On the left edge of the toolbar (assuming it's on the top or bottom of
the screen) you'll see a column of tiny hash marks. Position your
mouse over it, and the mouse cursor will change to a 4-way arrow. Click
on the toolbar and drag it into the middle of the screen. Then, a
standard X will be in the upper-right corner that will let you close
it.

HTH,

Nick Hebb
BreezeTree Software, LLC
http://www.breezetree.com