Just flash a Froyo ROM like the "Resurrected Bumblebee" or the "Harmonia" long enough to activate your account or fix it. All Froyo ROMs have the activate app preinstalled.
Sorry for delay. The activate app can only be found in Froyo ROMs, stock and custom. That is why I kept a backup of a Froyo ROM at all times.
Just download and install one. Then back it up in the recovery.
Go to my previous post for link to all things V, including links to ROMs.