http://www.wedi.org/snip/
http://www.hipaadvisory.com/regs/finalsecurity/
The final security regulations, while tough reading, can be deciphered.
You can solve 80% of your problems by simply creating low-cost solutions: Create policies and procedures, and conduct training. For example, I was alone in a room at my doc's office the other day waiting to have bloodwork. Sitting on the computer screen was information about another patient. Big HIPAA no-no. Training employee's to log off computers or lock their workstations (Windows XP/2000/NT) would solve that issue.
Conduct a risk analysis of your weaknesses. Then develop a plan to become compliant. Then is there is ever an issue, you can say, "This is what we used to be like, this is how we are now, this is what we plan to do in the future." You must be showing a "good faith" effort that you are attempting to comply. You are not being asked to remedy all issues overnight.