Solved Name restriction

We need something to restrict certain symbols in names from entering the server. I'm getting players that use alt key codes and weird symbols. It's hard to deal with. So... if you had something like this that allows certain letters.

the characters a player can have in his name.
allowedChars=a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,1,2,3,4,5,6,7,8,9,0,`,-,=,',.,[,],(,),{,},~,_

Or something like that....