How can I update to iOS 5 on my I-pad 2?, How can I update to iOS 5 on my I-pad 2?

http://support.apple.com/kb/HT4972

You will only be able to update to iOS 6.0.1 now. You cannot stop at iOS 5.

Just connect your iPad to your computer, launch iTunes, click on your iPad name under the Devices heading on the left, click on the Summary tab on the right. Then click on Check for Update.