Call HR and find out exactly what they are looking for and emphasize your resume to fit that position. DH keeps at least 3 diff. updated resumes.

Be open to things that are not exactly what you want. Most jobs morph into something else anyway. EX-20 hrs. can be more if you state you are available on short notice for vacations and sick days. (paid Comm. Coll. cash that way.) Also, be that "goto guy" whenever possible.