Transfering Adobe Acrobat 9 Pro to a new hard drive

I had to change hard drives and now need to re-install all my application programs.  I was able to download Acrobat 9 Pro, but my licensed copy has now turned in to a 30 day trial and I don't know how to get a permanent licensed version.  When I call up the software, I get a Software Setup screen that gives me two options.  The first option, which is checked by default, is: "I have a serial number for this product." and a serial number is listed below.  It is the same serial number I was issued when I purchased Acrobat 9 Pro.

So far so good.  Then I click on next, and here is where the trouble begins.  I get an Upgrade Check window with the following text:

The serial number you entered indicates that your setup is for a upgrade version of Adobe Acrobat Pro

To be eligible for this upgrade, you must already own qualifying product.

We looked in the default locations for qualifying products installed on this machine, but none were found.

You may verify upgrade eligibility without installing your previous software by completing the fields below.

Select a product you already own

Enter the serial number for this product

Acrobat 9 Pro is not listed in the drop down menu of product selections, so I am unable to get rid of my trial status.

Please help me.  I am not trying to upgrade.  I am just trying to download a replacement copy of Acrobat 9 Pro, which I already have a license for, on my new hard drive.

Thanks.