First, I feel obligated to warn you that you installed an obsolete version of Fedora that is no longer supported and whose repos are now in the archives. The repo files that get installed will be busted and need repairing to find the archives if you want to update to the final versions of packages that were available for Fedora 9 at the time it was archived. There's a HOWTO for that.
Next, regarding your question, you have to manually set up the so-called InstallMedia repo. Then disable all other repos (which will be busted in F9 anyway), enable the InstallMedia repo, and then install what you need from the DVD with the usual yum commands. Here is a recent thread that contains an accurate description of how to set up the InstallMedia repo and use it...
P.S.: Maybe you installed Fedora 9 because of a class you're taking, or maybe it came with a book that you purchased. That's fine. But I wanted to add that version 9 was not Fedora's finest hour IMO. The release versions of many things (e.g., what is on that DVD of yours) were awful. Gnome was in the midst of a giant rewrite, and things were busted all over the place. I had no patience for it at the time and switched to XFCE. Fedora 9 ended up okay as usual after the updates came in, but it sure didn't start out okay. And Gnome was eventually fixed, but I never went back. I still use XFCE in Fedora today.