is there any other scanning software?

hi , i had been using NIS 2011 on my win7 pc for some time already

 

however, although my pc do not show any abnormality

 

i would like to run more scan with other scanning software to ensure my pc is 100% not infected.

 

is there any other scanning softwares you guys can recommend to me?

and do i need to run those scanning softwares in safe mode with no network option?

 

thanks & regards