H Visa

I have come to US through my company with my L1 Visa. I am currently working with my client. There is an agreement between my company and my client not to hire my company employees within 6 months after quitting. I cannot move to any other company here in US as i am on L1. My company is not willing to file H1 either. If I have to move to a different company I should have a H1 Visa filed.
Recently my client offered me to join their company, but I don't have my H1 and i cannot join my client company even if i get my H1 because of the 6 months restriction. What are the different options to join my client.

I already have a USA LPN license, was just wondering if its possible to get E3 visa to work in USA, I am an Australian citizen. What are the requirements?

I am here on an H1B and completed my BSC Nursing as well as obtained my state licence. What is the best way to proceed to get a job/visa in the USA.

I was working in US on E-3 visa before H1B. Which means I entered USA earlier. When does my 6 years clock starts?

I got my H1B in Feb 2005 however never entered the country for first 22 months as I did not get an opportunity to visit my company here in US. Eventually I came here in Jan 2007. When does my 6 year period start? Feb of 2005 or when I first entered the US in Jan 2007?

I got my parents Visitor Visa stamped when I worked for Company A . But now I work for company B and I am planning to get them to US now. Do they need to go for stamping again?

I have my H1B through a consultant company in USA. I never traveled on this visa and never worked for this consultant company. Now I have a direct job offer from another employer. My new employer wants me to work for them directly instead of going through my current visa sponsor. Can I transfer my visa to my new employer and enter US on this new visa? What is required for this? And how much time shall it take?