how can I print from ipad to non wireless printer?

If you have a computer attached to that non-wireless printer, e-mail the document to yourself, open it on that computer and then print it.

The main ways off a device that the iPad supports is wireless, so you'll need to email it or upload your document to something like dropbox and then download it to the attached computer.

For future use there are some wireless flash drives - like the Kingston WiDrive - that are their own tiny little battery operated hotspot. You connect your iPad to that, use an app to transfer the files to the drive, plug that drive into the attached computer and print.

Basically it's impossible to print to a non-wireless printer without another computer in the mix.

Actually you can print to a non wireless printer if you have apps on the iPad and your computer that will do this and as long as you can set up a WiFi network or the iPad and the computer are already on the same network.

I Am running an old OSX version on my iMac at work (Tiger OSX 10.4.11) and I have an app on my iPad called Save2 pdf. I downloaded a helper app on the Mac called WePrint. I do not have WiFi at work, but I create a WiFi network using the Ethernet connection to the Mac that my iPad can also join. As long as I can send the file/text/document to the Save2pdf app, I can print it on my old HP LaserWriter1012 which is not a wireless printer. This uses the Mac as the print server and the WePrint app on the Mac sends the doecument to the printer.

It's not a very elegant solution, and it is a little convoluted, but it does work.