Free BSD Question?

[Abdul Waheed]

Dear Sir, I am new in Networking and also new in free BSD.I don't know about free BSD Proxy.
I have some question i hope u will help me.
I want to implement freeBSD in my network environment.can any body guide me what are the packages i need to install with free BSD.from where i will start this.I don't know
I want to use FreeBSD 9.1 for following purpose:
1. As a proxy server
2. As a Router
what i need to fulfill these requirement.please guide me from start.

Thanks for help

Abdul