internet setup

[B F]

Hi, I just started using FreeBSD and am new to all things non-Windows so please bear with me.  I am having trouble getting my internet connection working.  I have installed FreeBSD 4.8.  It shares a switch with my Windows machine:
 
FreeBSD machine
    |
    |
   \|/
Switch---------->Cable modem----->internet
   /|\
    |
    |
WindowsXP machine
 
I have Roadrunner cable service ( i know, it sucks, but i get it for free).  Can someone just tell me step by step how to get my internet running starting from a FreeBSD clean install?  I have spent days trying different things I've read on websites and books, but have yet to get it working.  Thanks.
 


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