To honest with I totally think MyWi is a total rip off. $20 and it can easily be detected and blocked.
Go with a tweak called TetherMe. Sooo much better, completely untraceable and it uses the native tethering settings in the native Settings.app.
Why pay $20 dollars for a tethering app when you can pay $5 once for a very functional, undetectable, native tethering experience.
I tether to my lap top, and iPod 4G wirelessly all the time with no problems. Works great with bluetooth, USB, and Wifi with no problems.
Ya haven't actually given Intelliborn $20 for MyWi yet have you???
I hope not.lol. Total rip off. Intelliborn does have great tweaks but they charge ridiculously for very one of them...especially since there is always a tweak that does the same thing for less then half the price.
The only tweak from Intelliborn that's worth spending a stupid amount of money on is IntelliScreenX. now that tweak actually is worth buying...wouldn't quite say its worth $10 but I certainly do not regret buying it. It's awesome.
But yeah...MyWi is a rip off...get TetherMe. 5 bucks...much better.