i can't confirm you can use this to do this but you can get email package with your domain host and use a email with that and then you can just put the nameserver pointed to the parking nameservers :hehe:
Yes, you can. Either use domain forwarding, as Pim(P) has said, or use a server-side redirect (which is basically the same but allows you to work with the domain more flexibly; it means however you have to host the domain somewhere).