I saw an advert at the weekend for a 'USB Turntable' that simply connects straight to your computer with some simple software. I don't know what the quality i like though, since I haven't read any reviews.
Here's one priced at £119.95 (@$240.00?):
http://www.firebox.com/index.html?di...01&src _t=wnp
I've been looking for a way to do this, but I don't really want to splash out as it would have very limted use ie once things have been converted, it won't get used again.