When you register for the match and submit your rank order list: You could match into a categorical (PGY-1) 4 year program, where the prelim year is integrated into the PM&R residency. You could match into an advanced (PGY-2) PM&R slot, as well as a prelim year via your supplemental ROL. So your intern year would start July 2009, and your PM&R residency July 2010. Or much more difficult and stressful you could match into a prelim year only, and try to find an open rehab spot on your own during your internship.
You need to do some type of prelim year. See the link a few posts above to learn which satisfy the criteria.