Things you need:
Evolution-X (burn to a dvd or cd-rw)
DVD burner (very very very few games fit on a cd, only hacked ones do.)
FlashFXP (free 30 day trial, then you have to buy, unless you can find it hacked elsewhere...)
Xbox ISO Toolkit
AND a router of some kind to hook your xbox to your PC via the BBA.
You will also need to setup the EvoX dashboard:
1) Make sure your Xbox is connected to your PC.
2) Load your burned copy of Evolution-X into your modded xbox.
3) Go to "Network" and note the IP.
4) Using FlashFXP on your PC, connect to your xbox using the noted IP.
5) Click on the "D" drive and copy the file "default.xbe" to your PC
6) go back and click on the "C" drive. Copy the file "xboxdash.xbe"
to your PC. (this is to back it up. DVD's don't play with the evoX dash)
7) Still in the "C" drive, rename the file "xboxdash.xbe" to "ms_xboxdash.xbe"
8) Copy the "default.xbe" from your pc, to the xbox, and rename it "xboxdash.xbe"
Close FlashFXP. Now, power off your XBox, and power it on. Leave the disc tray open. After the new dashboard loads up, close the dvd tray with a game in it and wait for the light to stop blinking. After it stops, connect to you box with FlashFXP and go to the "D" drive. This is the game. Just copy it to your hard-drive (2+gig for average game) and make an ISO image of it with the Xboxisotoolkit. Burn to a dvd and BAM. Your set.
Guides a million times better then mine @ the official evoX site:
http://evox.xboxhackz.net/