helo
antivirus: avg, http://free.grisoft.com/*******.php/doc/2/
at the bottom click next, than continue in that fassion until you can download it.
firewall: zone alarm,
http://www.zonelabs.com/store/conten...ku_list_za.jsp
they'll let you have the trial for pro if you want but that's 15 days than it doesn't work and you got to get the free (email me if you want to renew the trial)
don't forget to configure it properly! so it lets limewire through