How can I get a recent (circa 2008) roster download for ESPN NFL 2K5 for the XBOX?

I will not play Madden, I cannot stand it, and NFL 2K5 is still the best football game I have ever played. One thing, though, is that I get kind of bored using the 2004 rosters. So if you know how I can get one onto my XBOX (actually a 360) I would greatly appreciate the help!