Printing-DIY invites

Did anyone who did their invites themselves or plan on doing so bring their stuff some where to get printed? My computer keeps saying the RSVP invite is too small, the main envelope is not an exact side blah blah blah. Is there a place I can bring them to be printed. Is this something that can be done at kinkos or something like that? I have all the paper products and all that. I didn't even print the invites and enclosures yet. I hope those don't give me issues. I am waiting to get the drafts and documents sent to me!

HELP ME!!!