I moved this to the auditing forums thinking it may be more appropriate here. As I remember, either in this forum or the the Occupations In Quality forum there have been several good threads on this. You might want to look through some of the threads and try a search. But to summarize:
There is, as I understand it, somewhat of an over abundance of folks who have taken the Lead Auditor Course. Many have some type of experience if only involvement in their company's internal audits.
To get in with a registrar may be difficult because most are looking for folks with at least some experience. Technically, you should register with the IRAC or the RAB to become a provisional auditor in their system. Read and know the requirements of each for details. If I remember correctly, the RAB's program is graduated:
Provisional Auditor
Auditor
Lead Auditor
The RAB can provide you with the details of their system.
Then start calling or otherwise contacting registrars. Most registrars want, as a minimum, an RAB provisional auditor. But, as I said, it is my understanding that there are a lot out there. Someone else may be able to give you a better picture of the current status of the supply of provisional auditors (or auditors in general). I may be wrong, but I don't think so.
See if there is an ASQ chapter in your city. Some cities, Cincinnati is one, have 'Audit Consortiums'. Contact them and 'join up' if you can. They can help provide auditing experience, which you obviously need, but the 'payment' is you'll be donating your time for being able to 'log' the audit. That's what a lot of this is about - how many audits have you done.
If all you have is a certificate from a Lead Auditor Course and want to get into the auditing field and have no auditing experience, make sure you love travel, will work dirt cheap and know you have a steep hill to climb. And we're only talking ISO 9001. If you have other aspirations, such as ISO/TS 16949, ISO 14001 or any of the others you better have some money to spend for courses and specific certifications. QS is still 'alive', but I don't see too much use for you to think about QS auditing.