> I forgot to ask if there is a shortcut to switch to the eraser?

Just press E.

If you have Special Edition Using, the shortcuts are all on the card on the
inside front cover of the book. But you don't need the book for them. If you
have PS7, just roll your cursor over the tool and leave it there. A tool tip
will pop up (unless you shut them off) and these tell all the shortcut letters.
In PS6, you may have to click and hold on the tool to open the fly-out
menu...the menu has the shortcuts listed. Scroll like shortcuts by holding the
Shift key. For example, Shift+T will change to the Type tool and then the
Vertical Type and Type Mask, etc.

Hope that helps.

Richard Lynch
http://ps6.com
http://hiddenelements.com