Aint sure if any of you might need that once, but if so, it sure was worth that Thread .
I came across that while converting clothes with Clothes Converter .
That app uses obj and cr2 files to fit clothes to different figures .
Poser4 is using obz and crz files instead of obj and cr2.
So, if you ever have Poser4 files and they seem to not work due to the wrong extension, here is how it goes.
Just open the crz or obz file with any unzipping app ( winzip or winrar) since obz aint anything else than a compressed obj and crz is the compressed cr2 file .
Save to your runtime and