Have a look at \link{http://www.cricut.com/\this} and this\link{http://www.croppinparadise.com/provo-craft-cricut-personal-electronic-cutter-preorder-p-11861.html\OK}
No computer required, they cut alphabets and all sorts of shapes.
Thats the good news
The bad news is
They will retail around £290.00 and there're not in this country until Oct/Nov this year because of the electricity currency
I've emailed Provo and it's true they're not compatible with our electricity current.
I've wrote my christmas list and this is at the top I've ordered mine ready, just incase santa forgets to bring it.