Currently Being ModeratedJun 11, 2013 8:11 PM (in response to Guesswho369)
OS X doesn't do bridging, so that's out.
Internet Sharing doesn't do port forwarding, so that's out too. You would have to configure NAT and ipfw manually, which is unreasonably complicated for what you're trying to achieve. The right solution, if you can't run Ethernet from the router to receiver, is to use a second wireless access point, such as an AirPort Express, as an extender.