If you need to get AirPrint working on non airprint printer.

[Hemps]

I struggled with this but finally found a solution for those who need to print anything from their iphone/ipads to a non airprint printer.
Unfortunately you need a desktop/laptop on and connected to the printer via wifi or USB etc.

Install printer drivers on laptop.
Share Printer.
Make sure printer and iphone/ipad on same wifi.
Download and install Apple Bonjour Printing Services - http://support.apple.com/kb/DL999

Download this - http://cdn.jaxov.com/wp-content/uploads/2010/11/Windows_AirPrint_Installer_iOS_5_for_x86_x64.zip
Right-click install file and install as Administrator.
Double click x32 or x64 reg file.
Install Airprint Service.
AirPrint Auth - Guest
Enable Guest Account - ticked.
The service will use your local username and password.
Allow through firewall.

On iphone/ipad try print anything - select printer - any shared printer you have installed should show up.
There will be a lock next to them - choose a printer then enter your local username and password.
then select - Print
the above settings worked for me on 3x laptops and 2 pairs of ipads.

 

[kidcolt]

I use to use a Raspberry Pi model B+raspbian+cups to turn both my USB only laser printers in to AirPrint, network enabled printers.

 

[Lord Flacko]

You can use HandyPrint

 

[Hemps]

You can use HandyPrint

Very nice program but Mac only, there used to be fingerprint for Windows which worked well but they cancelled that project.
All others I tried required an app of some sorts.