M@ars, you got your sig in 5...alright...10 minutes
K1lingdr3ad: You just put IMG tags around the url and post it in the sig. I don't know why it shrinks for you, but my sigs always stay the right size.
I really hope this is what you were looking for.
Anyway, first you get the url:
then you put these tags around it "[IMG]" and "[/IMG]"
Then you post it in your sig and it shows up full size.