The only thing I could think of in regards to handing in quests without the hassle of tabbing/maximizing would be to have your windows stacked on top of each other. (Same res/etc) Then find another piece of software that would move your mouse in each window. It would take some messing around to get it right, but it could work that way. I'm just not sure if there is a piece of software to do that. =\

Edit:
Quote Originally Posted by 'Fursphere',index.php?page=Thread&postID=41776#pos t41776
It is possible to use a broadcasted mouse to do this as well on all the alt machines.
Aye, I'm sure there are ways around this particular issue if you're running multiple machines. However, I'm only running one machine with four clients open. =(