Hardware questions:
I'm a long-term user of my two PRS-500s, and know them intimately

. I want to make absolutely certain if these older AC chargers will charge my new PRS-505.
Also, does the NEW 505 charger work on 220 Volts, like these old chargers?
Software questions:
Does the new disk serve any purpose since I have the current software on my computer?
Will I still get the $10 off of a book purchase if I don't install from the NEW disk included with my purchase? (The language seems to emphasis the idea of new customers. Presumably, if I already have the software [from my 500s], I suppose I'm not a new customer?)
I'll probably put BOTH my new-looking 500s on sale here.
Thanks,
Don