We want to add a global signature at the bottom of every email that is going out. It is going to be more of an email disclaimer for security purposes. I'm sure all of you know what I am talking about. I am just looking to find out where in the exchange system manager I can configure this.Thank you in advance!

In Exchange 2003, there is not "easy" built in way to do this. You can read this article: http://support.microsoft.com/kb/317680 Or, get a 3rd party app that will add them for you. Just look for "Exchange disclaimer" in google. I use GFI MailEssentials for this, but there are a lot of apps out there.

I read that GFI will still function for the disclaimer even after the trial is up. Do you know if this is true or not?

I would not want to appear to be promoting the use of software without licensing it, so I will not tell you this is true. I could tell you it is true, but I will not.