Thank you for the warm welcome, I feel at home already!
I plugged & unplugged the PB360 3 times until the light turned green, following some recommendation I read somewhere, and have many weekend activities with my kids, so I haven't played with it as much as I want!
However, now that you mention customizing, please let me (us) know about
your particular customization, i.e. buttons, dictionaries, themes, any other application you might've found. I have lots of Spanish books, so I reckon I will need the dictionaries. I found the Spanish equivalent of MobileRead, but haven't found the time to look around. Too many things to do...too little time to get up & running with my PB and read.