"TheSkeptic" <TheSkeptic.393nrf@DoNotSpam.com> wrote in message
news:TheSkeptic.393nrf@DoNotSpam.com...

[snip]
> I've been dealing with HP since Mar 07 re VISTA and Duplex printing on
> my Officejet 7310. January 30 I was told that the VISTA Service Pack 1
> "might fix the problem". I installed it last week and it didn't fix the
> problem. The 7310 still prints duplex in "FLIP MODE ONLY".
[snip]

I have a fix for the duplex issue, send a private email to bobh@mvps.org and
I will send the patch and instructions. Please put "Vista Duplex" in the
subject so I can more easily find it among the spam I get.

For others with the same issue, I have the patch for a number of other HP
inkjet printers as well. Please indicate which printer model you have in
your email.

Regards,
Bob Headrick, MS MVP Printing/Imaging