Which is better for windows? pthreads or CreateMutex?

Question

I am porting my application to windows from Linux. I am fairly new to the fine-art of porting application across platforms. As far as I know, Windows does not natively support POSIX threads implementation. Is this true? I have heard about some implementation of pthreads for windows (a wrapper or something), would it be better to use them or use CreateMutex and other APIs provided by windows???? Someone pls. enlighten me with the PROs and CONs of both worlds. Some miscellaneous tips for porting would go nicely along with the answer.

Thanks in advance.