If it expires soon then I suggest you contact the support and just renew the domain first. As I know Dreamhost is not just provide hosting, but can also just act as an ICANN registrar.
So maybe.. It just maybe you can have your panel active and just has domain park plan. It's my best guess, but for sure contact the support.
Get YOUR $97 off on yearly plan with [color=#CC0000]YOUGET97 [/color] promo code. Sign Up NOW