All that will do is make the text box for entering the sig smaller....which might put some users off...but will in no way limit what they can put there.
I have the "Limit Signature Length" installed on a couple boards...it simply limits the number of characters allowed in the sig. It has it's good points and bad..but it works(ish)!!
I've uploaded it here:
Sig Limit Hack Credit info is located inside the text file...it is NOT mine to claim...not defend.

I could not find this in the database here...I'll see about getting it added. I might have missed it though!
