Hello Nbkan and welcome to the forum,
Should you decide not to wait, your purchase documentation includes the information that you may apply for a refund within 14 days of purchase through the Support Center, along with purchase details (Purchase Date, Reference #, etc) and the fact that you are running 64-bit Vista - once you are logged-in to Support, you will find the email link.
Support has a bit of a backlog at the moment, so so please don't expect an immediate confirmation of the refund - as long as the request is made wilthin the stipulated time-frame, it will come.
You could then re-purchase once the 64-bit Vista-compatible upgrade has been released. Keep an eye on
Lavasoft News and the
Lavasoft Blog.
Regards,
Spike