If you need a nice, inexpensive scanner that does it's job and is pretty damn cheap, then try buying the Canon CanoScan LiDE 25. I got it for fifty dollars three years ago and it hasn't failed me once.
(The soap opera webcomic about nothing in particular.)
Places like Kinkos can scan stuff, too, but in the long run I bet that gets expensive. I'd say look out for rebates and sales, if you are picky you can get one for pretty cheap.