Dreamhost is my registerar for the domain say www.mydomain.tld. I have name servers for this domain mydomain.tld pointed to another hosting provider where I host my main website. I want to continue doing that.
I want to host a sub domain of this domain blog.mydomain.tld on dreamhost. How do I change DNS for blog.mydomain.tld so that I can host a wordpress blog on dreamhost for this subdomain only.