I just got one and i can't still use it good.

I was just wondering may some one explain me how do i get the screaming sound that you can see in lots of hairmetal solos like:
-Youth gone wild
-We're not gonna take it
what do i need to use alot what less? or is there already some efect in bank?

I'm not really good at explaining this, english isn't my mothertongue.
Quote by akack
Don't you mean G2.1ut?

from the pedal:
g7.1ut guitar effect console