Q: how to configure personal hotspot in ipad2

You can't, it's currently only available on the new iPad (iPad 3).

No. Personal Hotspot is not a feature of the iPad 2. It's only available on the new iPad.

There are right. Apple close with iOS 5 the hotspot personal on iPad 2 for better sell the new one

Also if you take new after there close too about other new iPad there not import maybe we are happy with our product.

I have same problem before. In time my iPad work with iOS 4.3.3 I have personal hotspot but after update to iOS 5 I lose that function.

I'm sorry but your post doesn't make much sense in English. However, regardless of software version, unless you jailbroke your iPad, your iPad 2 never had the personal hotspot feature. It never will. Resurrecting threads that have been dormant for six months won't change that. Time to move on.