Mari—
There are over 250 jobs listed on the employment opportunity page of the Crime Scene Investigator Network. Many are entry level jobs.
You can sign up for a daily email of new CSI and Forensic Science job postings. The email alerts go out several times a week featuring new jogs that have been posted. Or you can sign up on twitter and receive the new job post alerts that way. Sign up at http://www.crime-scene-investigator.net/jobalerts.html
Volunteer work with different agencies will be helpful.
Here is a tip if you are having trouble getting a job: Apply for a "related" job, such as a Forensic Autopsy Technician, Evidence Custodian, Property Officer, Community Service Officer, etc. This can be a way to "get your foot in the door" or gain on-the-job experience that will help in getting the job you want later.
To get in this career field you may find you need to move to a different location to get an entry level job. But once you have worked a while in that entry level position you will have the experience required for other jobs.
—Steve