I just got the same setup as you, and bought the Elgato EyeTV Hybrid off eBay for around $60. I currently have an HD antenna running off of it picking up the basic channels so I can watch football on Sundays, and I must say it's a fantastic piece of hardware (and software). It gets better reception than the converter box out in my living room, and auto-downloads a program guide each day. You can record shows whenever you want straight onto your hard drive, and (coolest of all) you can stream live tv or recordings to your iPhone or iPod Touch through their EyeTV app. It's basically a DVR for your computer. I think it's great. Highly recommended.