Currently Being ModeratedMay 6, 2012 2:10 PM (in response to lpaley)
Sorry, but currently within the Mail App, there is no way to do this. There are likely apps in the App Store, which may offer this capability, so you might want to check there.
ETA: I found this in the App Store, which appears to offer what you're looking for: http://itunes.apple.com/us/app/email-signature-pro/id317243351?mt=8
Currently Being ModeratedMay 6, 2012 2:36 PM (in response to rbrylawski)
Thanks for the help.....I'll take a look at the app.