If you bought in Nov '05 then your Pro's way out of date & your email address will be long gone from the database.
I think there should be something included in the Pro info to let users know that they should
save & back up their Pro installers. It's been suggested, but so far nothing's been done about it.
In your case, you've either got the choice of downloading the free version or buying Pro again. Sorry, but that's it