What is the distribution called that is loaded fully with tools to check how safe my SMB shares are and how easy it is to tap into my wireless network?
You probably want to check out this page: http://wirelessdefence.org/Contents/WirelessDistros.htm.
Listed are some of the more Wireless and Penetration Testing specific Linux distros available.
Check out the Backtrack distro (http://www.remote-exploit.org/backtrack.html). It is built from the ground up around the process of penetration testing. It will include all the main sniffers, scanners etc that are designed for what you are wishing to do.