Auto body repair & detailing: hard water spot removed, amway product, auto parts store

Question
I have hard water spots on my 2006 jeep liberty both on the paint and the glass. I would like to know how to remove them.
                                 thank you.

Answer
Hard Water Spots.  Aren't they fun!
Two answers for each paint and glass.
For the paint, you need a detailing product called a Cleaner.  It's like a polishing compound with some abrasive in it.  A popular line available in most any auto parts store is Meguiar's.  This is a two step process in many cases because the compound that will remove the water spots may dull the paint finish.  This isn't a big concern as it's only superficial.  First step is to find a non - conspicuous area to work on.  I would first try  Meguiar's Fine Cut or Dual Action Cleaner/Polish.  Use a small terry cloth rag and put a quarter size drop on it go with some pressure, use a circular motion and overlap an area at a time (door at a time, etc. Use the body trim or sections as boundaries.)  Then use a soft terry towel to buff off the haze after it's dried - usually just a few seconds.  Take a good look and see if you're making progress.  If there's a good improvement redo the area.  When you're done, follow up with  a wax polish, like Meguairs Cleaner Wax.  My favorite is Mint Condition Silicone Glase.  It's an old Amway product that is now available on www.quixtar.com .  You have to have a referral to register with the site.  Mine is 57305 and JEN .
Realistically, if that doesn't remove the spots, you need a professional.  Because if you go the next step up in abrasion, the dulling of the paint will be quite pronounced and to return the paint to a clear shiny finish will be almost impossible by hand.  Using a buffer should be left to a professional.  An exterior cut and buff should be less than $175 and will make your car exterior brand new.  Get referrals for a good detailer, there are good ones and plenty that are winging it.
As far as glass, the best product I've found is Spot-X.
You can get it here:
http://www.improvementscatalog.com/product.asp?product=237675zz&dept%5Fid=16120
Just follow the instructions.  Works great.  
Watch where you park your car - sprinklers, etc. with hard water will spot your car.  Keep it waxed for best protection.
Hope that helps, and let me know how it goes.
Notto