Security Shield is overriding my Mcafee

[marcefay]

I was reading a review on movie just recently and left my computer for a bit. Somehow the program "Security Shield" was

able to shut down my Firewall and such. I had to go "restore my computer" and i thought it would go away, but today it

made it back, somehow this trojan or something is in my computer and overriding McAfee or windows firewall. How do

i get rid of this program???