Just arrived and heading for Divorce

All,
My wife and I just arrived to the UK from the US six months ago due to "Her" job transfer. Unfortunately we have decided to go our separate ways and I need advice.
Currently I have a 5-Year Dependant Work Visa, and I want to continue living in the UK, the place is so beautiful.

Questions are:
1. I have a Work Visa, but not a job. If I get a job and we are divorced, am I required to leave the UK?
2. Are Dependant Work Visa's verified prior to employment or during employment?
3. Should I share a flat for a while or is council housing an option?
4. I want to become a British Citizen and believe I only need to be here four years to make that happen. Is this correct?

Thanks again for all the assistance any of you can provide, I sincerely appreciate it.
My email is: mwcarson@msn.com if your reply is confidential.

Cheers

Sorry to hear things are not going well.  The only advice I have is to contact an immigration expert or perhaps your local citizens advice bureau - sounds like you may need some professional advice on how to proceed.