I am sure its been discussed before, but i just want to make sure I have a few things "clear". I am now able to upgrade to the 3GS, so I am going to turn my 3G into an ipod and give it to my kids. I know how to do that, but i am "fuzzy" about the following; Before I do the swap, is it possible for me to create a new profile for the 3G, that only has what i want it to have on there in regards to apps, music, and movies? Is this profile locked to the SIM? In other words; If I need to update apps or OS, I will have to swap my good SIM into it to do so. But, when I do, will it allow me to use the profile I want, or is the SIM locked to a certain profile?