I think if it were 64-Bit-compatible, they would have mentioned it here. But what they said sounds as if they handled the memory problems in a different way. The firefly renderer runs in a different task, so it gets full 2 GB Ram in Windows. With caching on hard disk and a much more memory-friendly texture handling, the need for the renderer being 64-bit is not that high.

If you use  64Bit-Windows, Firefly can get 2 GBRam and Poser can get the same amount. If this is really helping and nessesary will depend on how effective Poser 7 handles memory. It's not the best solution, but for me it sounds like a close second best.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

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