I bought (downloaded online) Xara 3D5 in July '05. I have not been used it in a while. I did some repair works on the computer since then. I tried to use it today but it asked for the serial#. I do not remember the number and I lost the CD that they sent by the mail. And I did not registered the product. Is there any suggestion of what I should do? Any suggestion would be appreciated.

Thanks,
G