What could I do with a case like this?

There are several issues: 1. Generally, companies have policies that say anything on their computers are company property. 2. Do you have any...

Can I use a business name that includes within it the name of another business if we sell different products?

Based upon your example, it depends - it's the likelihood of confusion that triggers problems.

We have no facts, other than you have a criminal matter. Get an attorney, and speak with him/her.

Can I sue

I see nothing illegal in this post. You are in a safety-sensitive position, and there appears to have been a serious allegation. I think they are...

Time for a discussion with your attorney. Generally, if an attorney has a valid reason for not appearing, the court will re-schedule.

What to after employee commits faud?

It depends upon the facts. But not many employers would retain an employee that acted in such a manner.

What makes a hostile work environment?

Generally, a hostile work environment claim is based upon a protected class (age, sex, race, etc.), or sexual harassment It sounds like you have...

What if I lie about a felony on a job application?

Lying on an employment application is a valid reason not to get the job, even if you are the best candidate.

Where do I start?

Step one - get to an attorney. Now. Sounds like this is going to get ugly.

How can I stop my in-laws from harassing us?

I don't see a legal option. You need to speak with your wife, and perhaps block their phone calls.