Softmodding is not near as good as a mod chip. But you will need some soldering experience in order to solder your chip in as I'm sure you already know. Here is a site to check out Swap Magic at, http://webpages.charter.net/modchipzone/softmodding.htm
All you do is insert the swap magic disc, then use your slider card to pull out the drive, put your burned disc in the drive, close the drive, and click ok on the menu screen. The cool thing here is that you never push the eject button otherwise it will not work. If you get a flip top case, you can go without the slider card, because then all you have to do is open the flip top, grab the game out and put in your backup game.
So did you give up on the Xbox s2a? lol, no I'm just kidding man...