<p>I'm porting a C++ 32 bit application to 64 bit on windows. The application is a client of IBM WebSphere MQ. It uses the MQ client API.</p>

<p>Now, as the port progresses, I'm trying to find a 64 bit client. So far, no luck.</p>

<p>Does anyone here happen to know if where I can find one or confirm that there isn't one?</p>

I found this page on IBM's site:
IA94: IBM Message Service Client for C/C++
. On it there is a link to a
readme.txt file
which, under "Supported environments" lists "Windows 2003 Server x64 edition - Microsoft Visual C++ .NET 2005 Service Pack1".
Hope that helps!