I have no experience with the particular werewolf but I do have experience with something similar in texture.  At most you should have shadows on one light only and realise that ANY shadows at all are going to substantially increase both memory use and render time.  The longest I've ever had a Poser 7 Sr3 render take was 3 hours and that had the fuzzy version of the "Bedtime" sets plush bear.  In my case I think it's the nicest plushy around but as with the werewolf in question here you are either going to experience memory problems or render time problems for anything half decent in size.  2gig may just not be enough memory. 3 gig is what I have and it took a while to get settings that worked. It doesn't look at all like a lycan but trust me it has a texture that's similar in nature.