Q: How to connect  ipad2 to wireless cannon printer MX432 which also used by a dell computer

First check to see if its in the list of airprint enabled printers then folow instructions in article. If its not, then there are other options.

iOS AirPrint Printers  http://support.apple.com/kb/HT4356

How to Print from Your iPad: Summary of Printer and Printing Options

http://ipadacademy.com/2012/03/how-to-print-from-your-ipad-summary-of-printer-an d-printing-options

Print from iPad / iPhone without AirPrint

http://ipadhelp.com/ipad-help/print-from-ipad-iphone-without-airprint/

How to Enable AirPrint on a Mac and Use Any Printer

http://ipadhelp.com/ipad-help/how-to-use-airprint-with-any-printer/

iPad Power: How to Print

http://www.macworld.com/article/1160312/ipad_printing.html

Check out these print apps for the iPad.

Print Utility for iPad  ($3.99) http://itunes.apple.com/us/app/print-utility-for-ipad/id422858586?mt=8

Print Agent Pro for iPad ($5.99)  http://itunes.apple.com/us/app/print-agent-pro-for-ipad/id421782942?mt=8   Print Agent Pro can print to many non-AirPrint and non-wireless printers on your network, even if they are only connected to a Mac or PC via USB.

FingerPrint turns any printer into an AirPrint printer

http://reviews.cnet.com/8301-19512_7-57368414-233/fingerprint-turns-any-printer- into-an-airprint-printer/

Print from iOS device to virtually any printer

http://www.lantronix.com/it-management/xprintserver/xprintserver.html