I am US citizen legally married in US. Wife has business US visa. Is applying for Green card from US better than from outside?

You need to be careful with this - there are issues of preconceived intent that come into play here, and so you should consult an attorney before...

Can J2 Visa holders convert to H1B

I agree with my colleagues.

Yes - disclose everything!

My H1B Trasfer petition got denied 2 twice from Jan 2012. But I have valid I-194 and visa stamped on passport till March 2013.

So you have an H-1B from an old employer valid to March 2013. If you are still working with the old employer and still in status, you might be OK....

Unfortunately the interviewers often do not have time to review the files before the interview. And they cannot make such decisions at the...

H4 approval notice while H1B extension is still pending.

Yes - H-4 is based on H-1B. It must have been an error. Do not let her travel until you have your status approved.

Last Name change in non US passport and Green Card (I-90)

I am a little confused. What was the first error? As you indicate your passport and green card were OK at one time, it seems you would have...

What do we need to do after a10 yr bar has expired?

You have to start over. There is a chance of denial but if he waited ten years it should be ok unless he had a permanent bar. I know ou were told...

Would i be able to renew my green card? i have a 3 year probation they took me to court for theft by taking. No jail time...

You can renew but at that point they look to see if you are removable or not. And that is based on the conviction and not necessarily the jail time.

Your B visa was automatically cancelled by overstaying. You have to reapply to come.