I started the installation manager for SWX 2009 SP5.1.  I selected individual upgrade (on my PC only).  Then I picked the "Customize products to upgrade" option.  Then I picked "Upgrade using large download).

The next screen displayed the following:

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SolidWorks Premium

You are  entitled to SolidWorks Premium, but the installation you are upgrading is  SolidWorks Professional.

Would you like to add the SolidWorks Premium products?

I am afraid to pick Yes.  I don't want the company to get charged for an upgrade.  Anyone seen this before?