If it's the same people who did Hogfather, I have no qualms about how well it will be done. I just wish they'd pick... well, better books. "Going Postal" is probably my third least favorite Discworld book. (With the least favorite being "Eric," which was basically pointless beyond getting Rincewind back out where he can have better books, and second least being "Making Money," which was just confused, diffuse, and muddled.)