Saving public key to a file

[Robert Krueger]

I'm having a small problem with syntax.
I'm trying to save my public key to a file called MyKey.pub, so I can
send it to someone.
I execute this line "gpg --export --armor MyUserID MyKey.pub" and I get
a "File not found" message, and it prints to the screen.

One last question, I hope...
When I finally do get this right, and send this file to a friend, will
it automatically contain a fingerprint?

I've read and reread the Handbook, but I'm still having trouble, sorry.

Thanks,
Robert