Make Your Own TiVo?

seanldunn asks: "Currently I am looking at digital video recorder solution to help flesh out my home theater, I've taken a look at the two consumer boxes that I know of, RealplayTV and TiVo"> link however their stance on not being able to upgrade their hardware without taking it into the shop doesn't float my boat. After all, why should I pay them $300 for a 30gig IDE hard drive, when I can buy one off the shelf for $180, and I can get a 60gig for about $200 in a year? Currently I'm am thinking about adding a few components to my personal web/file server running Linux... I'm looking at grabbing a video capture card supported by bttvgrab and some sort of mpeg decoder card with TV out, maybe a Creative Labs Dxr2. Quite frankly a software decoder with a TV out converter doesn't sound good for playing on a P-133... Anyone know if there are any better/cheaper solutions then this?" Interesting thought. If such a solution were put together, how would it compare in quality with the comsumer solutions?