This SEEMS to be working after following instructions left by panospc 
at the URL given by elephantz above Quote:
To reset trial try this: 

1. Open regedit and find a key similar to this "HKEY_USERS\S-1-5-21-1990463721-3597328680-2839732842-1000" 
2. Delete all values like this "PC909-XXX-XXXXX-XXXXX-XXXX" 

Before this registry editing, all I got was "trial expired" from this VSTi even after using the TE name/serial --but after editing the registry as suggested, and rebooting, the plugin appears to be registered...however, time will tell...this appears to be one of the better small piano VSTs.