In reply to:
Is it possible to direct the domain to my space in the shared server at Dreamhost without having it fully hosted at DH?
Absolutely! "Fully Hosted" is only one of the ways you can "house" your domain in your "space" at Dreamhost. You can also set the domain up to be:
* Redirected
* Mirrored
* Parked
* Cloaked
In reply to:
If so, how can I configure it?
1. - Make sure you set the DNS at your Domain Registrar's site to the proper Dreamhost settings (ns1.dreamhost.com, ns2.dreamhost.com, ns3.dreamhost.com).
2. - Just visit the Manage Domains->Add a Domain section of the control panel, and complete the appropriate "box" for how you want it configured. The boxes/forms for the choices other than "Fully Hosted" are probably "below the fold" on your screen (just scroll the page down). Complete the chosen form, and you are "good to go"
--rlparker