So, I'm pretty sure my Macbook doesn't have that wifi-N thing that Apple is charging a couple dollars for (any way I can tell?) I've got the 2Gz Core 2 Duo. Anyway, I was thinking of getting the update for no particular reason other than to stay current on wifi drivers but then I thought - does Leopard already come with this? IOW, if I *don't* upgrade my already-built-in "n" wifi with the driver, will leopard as an upgrade go ahead and do that, or no?