Okay, now I'm futzed..

I HAD LimeWire PRO, 2.5.x (I can never keep track), but when I started it up today, it informed me that I needed to upgrade to 2.8.x, and it led me to the download page. I couldn't select a version of PRO for which I didn't have to pay again, so I downloaded Basic because I figured that it was a trigger affair.

WRONG! Now I have LW 2.8.x Basic instead of PRO. How can I get my PRO back?

Thoughts, canters and anecdotes welcome.