scrapebox

hello friends,
I bought scrapebox yesterday and i tried rapid index and blog commenting feature but i end up with having viruses in my machine.

i have avg antivirus , but when i open scrapebox, it asks for "allow for all" and "allow for safe", if I chose "allow for safe", then scrapebox doesnt work and if i use "allow for all" , then i get virus..

any idea how to use scrapebox effectively without having viruses.
also, do i need any specific antivirus


thanks
vinay