You can do this by going back to the school you graduated from and checking with their career and placement centre. All colleges offer ongoing help in this area even after you have graduated. In the meanwhile, find something in a related field that will add to your skills and marketability. Get some business cards or network cards. Let everyone you know that you are looking for a new career.
Computer science is one of the field where things change rapidly.
Read the want ads in the paper. Compare your skills to the skills most often requested. If you do not have the skills asked for, and you want to stay in that field, the only alternative is to get additional training. Also consider working part-time or through a staffing agency. Often you can update your skills or get some current work experience through a staffing agency that you can use to update your resume.