I'm going over to Radio Shack and buying a brand spanking new 720 tonight. I want to take it out of the box, charge it, and have a totally trouble-free installation. If I don't care so much about voice recognition, just want to let the install guide me through getting the latest home, unit, and map software....will I have a fully operational unit at the end of the process? If not what pitfalls will I run into?