I freely admit to my noobishness on this subject. I've looked around the forums for info and its something of an information overload. Anyway the situation is I have an older 2g iphone which was unlocked to 1.1.3 with the zibri tool dodad. I'm pretty happy with it as it is but I wouldnt mind trying out the shiny new app store.

Is it just a case of using the system restore tool in Itunes and then upgrading it to 2.2. Then using one of the tools (pwnage?) to unlock the phone?

Will I lose any info from the phone in doing that? Things such as the edge settings?