Excessive White smoke is coolant seeping into the cylinders (head gasket). blue smoke is oil burning.
How bad is the white smoke though? Is it "cant see though the rear window" or "puffing out the exhaust a little"? If its a little, it is probably condensation in the exhaust, caused by the car not gettting up to running temprature. (used only on short runs), you may also find mayo around the engine oil filler cap caused by short runs.