How to obtain Public Relations Assistant job?

I just graduated from college with a BA in English this past May and been unsucessful in finding a job. I have applied for many retail jobs just to earn mony to no avail and decided to try to search for a PR job. Can anyone give me advice in marketing myself to obtain a job in this field? I have string writing skills and can communicate intelligently. I just don't know how to go about getting my foot in teh door for this type of job because I have an English degree. Any help would be greatly appreciated!! Thanks so much.