If there is an import/export script for Blender which will handle the Sims 2 figures, you can use .bvh motions exported from Poser in that.  I haven't seen such an I/O script, but I also haven't looked for one....

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.