I was recently placed as an Administrative Assistant at a company located in Thousand Oaks through Crossroads Staffing. I was referred here by a friend who actually found them through a job posting on craigslist. All I did was go onto their website, fill out the online application, attached my resume and they called me the very next morning to set up an interview.
I would definitely advise someone who is trying to get in for an interview to be persistent and follow up with the interview to see if anything becomes available. They get new positions all the time!