I have registered for the Apple Developer Program and I am now able to login into the portal. I am a very newbie to App development for iPhone, however, I have read a few tu
Here is a pretty good tutorial on deploying iphone apps to your device. http://mobiforge.com/developing/story/deploying-iphone-apps-real-devices It shows you how to create certificates, etc. with pictures and all.
As for your SDK error, go to Project>Edit Project Settings and under Architectures, change the Base SDK to one of the listed versions.
Good luck with your developing!