The new version of PLE that will be available for d/l in Jan. will allow for importing of "commercial" scene files. Till then there's not much you can do...just a few more weeks.
The only other way around it is to send the files to A/W and they can translate them for you, but I'm sure there is a charge for it
Red bellows of flame have blackened my stones
Convulsing my frame and cracking my bones
Hell's dragons of steel who roar in their chains
Crawl into my caves to suck out my veins.....
-The Mountain P.F.M.