the forums at degreez.net

i'm quite a noob here so.. can someone help? i'm using a router wireless connection - linksys? (sharing internet connection with another pc) and i've never ever dl a firewall... EVER!! i dont' understand why its yellow?
used ICFRanger to change my ports? from 6881 to 6999? rebooted and it still refuses to work... am i supposed to add more? i don't really understand this port thing anyways actually.... tried the website... couldnt' really understand a word that was said...
what exactly am i doing wrong???
btw i'm using windows xp