Please help a newbie get started....I'm going to update my profile with the units i have tomorrow, but how do i get started with the "upgrading" process. I bought a boat used, and has a 798 ( will know tomorrow which one..ci /ci si...) and a 597 on my terrova/ipilot. How do I know what version software i'm running and if it needs upgrading? Can I register my units if the previous owner has already registered? Any other information is greatly appreciated