>Whenever we try to access the printer properties from the XFRX dialog box with Windows 7 64-bit SP1 the splwow64.exe hangs and the application does not respond again. The Windows busy mouse icon continues until we go into the processes and kill splwow64.exe.
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>This problem happens on a computer at the clients site and I'm able to recreate this here.
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>I've tried a few different printer drivers with the same results. Anyone else having this issue or found a resolve?

Have you contacted Eqeus support at http://www.eqeus.com/xfrxsupport.php ? It's been a number of years since I last contacted them, but at the time their support was top-notch.