downloaded a wee program to my iMac the other day called handyprint. it lets me share my printers across my apple network to iPads for Airprinting. see
http://www.netputing.comcomes in 2 flavours handyprint v5 - you have to be logged in, free to try for 2 weeks, you have to be logged in for it to work. Min donation $5.
handyprint pro, dont have to logged in just have the machine on, min $20 donation for a license key.
Basically the machine you install it on becomes a print server for airprinting. You cant give the menu for the printer so you would have the printer set to portrait and then copy and define to landscape and rename.