A friend shared this site with me today. I make NO claim that this is good for you, but it sure has a ton of fascinating stuff for iPhones and iPads.
Apparently “jail breaking” your iPhone is not illegal in the US. It has been tested in US courts. There is however always a risk that you might wreck your expensive “toy”.
Warning: It is legal for you to jailbreak your device, but it is also legal for Apple to release an update that kills jail broken devices (I know this stinks, as you own the thing), but be warned!
Without further ado I point you to iHackintosh!