I think you need the QFE hotfix for this.
"You experience problems when you try to print a document in a 32-bit
program on a computer that is running a 64-bit version of Windows Vista" http://support.microsoft.com/kb/941962/en-us
Windows Printing Team
Search the Microsoft Knowledge Base here: http://support.microsoft.com/default.aspx?scid=fh;
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"Phil" <keswick222@xxxxxx> wrote in message
>I may have posted this message to the wrong group earlier, so I am
> reposting it here:
> I have recently purchased a Windows Vista Ultimate 64 bit notebook. One
> my apps seems to have difficulty printing. The app works fine, except for
> printing. I get a print dialog box, but nothing happens. This takes
> about half of the time. On several occasions I have gotten an error
> message saying: "Thunking Spooler APIS from 32 to 64 Process has stopped
> Any ideas for resolving this? Phil