New User... Wont dowload...

I have mcaffee.. and im sure thats why it wont download.. but i dont no what to fix so i can begin using this.. i have bitcomet 0.70…i also think this is the reason becuzz when i downloaded limewire i had to change sumthings so i could bypass the fire wall.. can anyone help me>

First off, what McAfee products do you have installed on your computer?