Policies & procedures

[Nancy Allison]

Hi, folks. My experience is largely in documenting hardware and software. However, a friend has passed my name along for a contract involving policies and procedures. 

I'm trying to figure out if my experience of writing administrators' guides is relevant to writing policies and procedures, or if I'll be totally out of the running for this job. 

If you've written documentation for software/hardware as well as policies and procedures, how would you describe the differences between these two areas? Similarities? 

Oh, and do the initials "PCI" mean anything with regard to policies and procedures?

Thanks for all help.