invite wording

I need to start thinking about the wording for my invites. Does anyone know of any web sites that have different examples that I could look at. I am having a graphic designer friend make mine up so I have 100% control on the look of them, but I just dont know what needs to be on there how to say it etc,

ettiquet drives me crazy, cant we just say come on and party with us W00!

i like that

TIA

here's one.http://www.formal-invitations.com/invitation-text.html