Canadian Tax Zone set up

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Hi,
 
May I ask a question re oscommerce from a Canadian point of view?  How should tax zones and rates be set up to be recognized correctly at order time.
 
We are based in Ontario.  I have set up Alberta and Ontario as 2 Tax Zones.  Then for Ontario I have 7%GST and 8%PST, and Alberta 7% GST under Tax Rates.  Apparently outside Ontario I do not have to charge PST.  However at Order Confirmation time, I have a total of the Product amount, Ontario7%GST + Ontario 8%PST + Alberta7%GST for a buyer with an Ontario address!  Seems to be adding all the tax rates I have for Canada
 
I realize my set up must be modified, but am not sure where as the Tax Zone Ontario is not picked up via a dropbox containing the zones.

Any assistance will be greatly appreciated.