Fuel Injectors....

Ok, on my 97 cavalier i had to remove the upper-intake manifold when i was trying to replace the fuel injectors. The guy at the parts store told me i didn't need to use RTV (silicone) on the upper-intake gasket to attach it to the lower manifold...

what should i do?

put silicone on the gasket?
or
just stick it on there?

I'm currently in an auto class, and we never glue it on or anything. Just make sure it is fit snug inbetween the 2 manifolds. But, if you're going to use silicone or anything, make sure you attach it to the upper-manifold, not lower.