The reason no one is responding is because the thread doesn't have much info for us: What game are they from? What errors are you getting from the original importers? Also, if you aren't fully versed in model formats, I'd recommend having someone else take care of it, because it's challenging to write a full importer. Also, don't give up. Usually, if there's a will, there's a way.
Also, this would yield better results in the Model Ripping Help sub-forum.
Also, this would yield better results in the Model Ripping Help sub-forum.