Please give me a moment - How Employable am I?

I hope there are some team leaders/managers (or insightful grunts) out
there that can give this post a little time, as this topic is a heavy
weight on me.

I owned a software company for about 6 years.  I sold it about 5 years
ago, did almost nothing for about 2 years, and have been employed as
the sole developer in a .COM for the past two years by a former client
of my software company.

 I manage the web site, web services, and Windows Development, SQL
Server, and Windows 2003 Server (dangerously).

While I have managed a development team, (and sup****t/Service Team)
that was done so in my own company in my own style, perhaps not
correctly, I don't know as I have no I have nothing to compare it to.
In essence, I have never worked in conventional cor****ate
environment.

I am not satisfied with my current job as it is stagnant, I am going
nowhere. To boot, I am burnt out on Entrepreneur****p, while new
product ideas are vast, the idea of going back to "business
management" makes me cringe. I don't want to go back to that level of
stress.

I have no college degree, I am self taught, I am 36 and am considering
becoming a MCPD (Enterprise Developer /  C#) What can I expect in the
workforce at that point?

Am I employable? At what position? What Salary?

"Any" Comments would be greatly appreciated.