try this; it requires registration though, but i think it's free ->
http://tv.zaval.org/
i think it also requires cf 2...I haven't been able to get it to download anything but u might have better luck than me
edit: ok, two registrations are required (both free): one through the website of the software and one through zap2it (Assuming you're looking for N.A. listings). You need a certifcate code, which you can search for through google
it's actually neat..it'll download the week's worth TVguide and provides a small summary too. It's also customizable.