Hosting ONLY a Sub Domain

I host on another hosting service, where I must keep it. I would like to host on DreamHost, but I cannot determine how to add only to my DreamHost setup.

Ideally, I’d like to simply set Apache to respond to requests for I’m willing to make DreamHost the DNS for, and just point all A records to my other hosting service, if that’s necessary.

I’d appreciate any suggestions.

You might need to get the assistance of Dreamhost customer service / tech support to do such a thing, as I’m not sure the panel is set up for this.

– Dan