If you are going to Rapid City, South Dakota(SDSM&T), then chances are slim or near zero to find an off campus job out there.  There was no Dhoti stores in that place( at least  until Feb 2006). The city itself is beautiful. If you are a graduate student it is very likely that you will get some kind of TA or RA. I was there until Feb 2006 but moved to Los Angeles to find work. If you are determined to go, then there is a very good college ministry run by two lovely people who can help you to settle down.

Good luck