I bought my HD-PX320U2/BK-AP on Dec. 24th, 2009 at Hong Kong. The version of the driver is 1.00, but I need to download the latest one in order to support my current OS Windows7 professonal x64. However, the website in here claim that the serial no I enter is invalid, and I can't download it now. Could you please provide me a solution or send me a copy of the latest driver? Thanks a lot!