A question about signatures in mail

[Dan Eickmeier]

Hi, in the  signatures pane in mail preferences, i've selected all  
signatures, and added a signature.  I'd assume then  that the   
signature which i'd created would be available for use in any of the  
accounts that I have set up in mail, but in trying to select a  
signature, all I'm getting is none.  Do i have the idea wrong that if  
I have all selected in the signatures table, and then create a  
signature, that the signature I created would beavailable for use when  
sending from any of my  accounts?  THis does not seem to be the case.