I discovered that JDeveloper 11g can do this a lot faster. Just create a dynamic region. After this you can drag your Task Flow Region definition from the Page Flow folder in the Application Navigator and put it somewhere on the page where you want a commandLink then you will get Dynamic RegionLink option.
This will create a commandLink and adjust the dynamic region backing bean. If you also want a link to the first region of the page or more links to a particular region, just drag this Task Flow again on the page and it will create a new link.