Xbox update: I miss my old games!

I purchased an Xbox 360 and cannot play some of the original Xbox games. I have already went to the Xbox website and read into backwards compatibility and the update. I have tried to download the update via CD and USB drive, but not Xbox Live, simply because I'm not willing to pay for Live. Can somebody give me a step-by-step walkthrough of how to download the update on a USB on Windows Vista?

 

Get Updates for Your Xbox 360 Console Explained - http://www.xbox.com/en-US/support/systemuse/xbox360/console/systemupdates.htm

 

Updates are free for everyone.

And they recently disabled playing old xbox games if I recall right.

 

well that would explain why i cant update my xbox. oh well. i mainly miss the Hitman games, i guess ill just have to man up and pay for the 360 games.