I am very non-technically inclined. I read through the posts and am having difficulty with the following:

1. What is the best way to tether the 700p w/o having to pay the tethering fee? From what I understand there is this "flag hack" and there is PDAnet. Is the "flag hack" solid and accepable? What are the pitfalls? Alternatively, PDAnet suggest that they are ultra secure, albeit slower with the proxy (i.e. the normal PDAnet mode is not safe and I might get charged?).
2. Per this forum, I was grandfathered in my $10 Vision and $5 unlimited SMS. I specifically made it a point that I should receive the EVDO service for the same price. Sprint agreed. From what I have read here, I should be set up w/ no charges??

Thank you.