Also - we have a quite a few members who have expertise in this area. Amanda Foster, Duke Okes might be able to provide some insights as well.
Good luck :D
The major issues are:
1) do you have someone who is well versed in the 9001 requirements who could do the assessment? If not, either you need to find someone or need to develop someone (either by taking a course, or reading books, or having a coach, ...)
2) the assessment itself will be impacted by how sophisticated the organization and its QMS is, and whether or not it is well documented. If there is a quality manual and procedures someone knowledgeable can simply review them and get a rough idea of major gaps, and then perform an actual assessment thru interviews and looking at records to see whether the policies & procedures are being followed. If the QMS is not very well developed then the assessment becomes sort of a rough training effort whereby key members of the organization learn what is expected
3) the assessor(s) can then write a report detailing the major gaps, and can probably give a rough estimate of the amount of work and resources required in order to become compliant
Of course in order for this to have any legitimacy it must be championed by the leadership team, who will need to commit time not only to the assessment, but also to implementation if they decide to go forward.