Can I use a po box address for my Green Card application process?

No and that would be a very bad idea.

RE: H4-B WITHDRAWL STILL PENDING (H4 -B PETETION STATUS IS STILL UNDER INITIAL REVIEW), H1-B IS ALREADY APPORVED

There is no H-4B status. Consult with an immigration attorney regarding any withdrawal request.

Can I be found guilty on eyewitness account alone?

Yes.

Can I apply for dream Act if I am in the process of getting my GED ?

Yes. Consult with an immigration lawyer for details.

Can I file i131 after been here over 180days doing adjustment

Yes, you may file an I-131.

I am on my H1b 9th year extension (1 year incremental extensions) and planning to travel out of the country.

Yes, but depending on the reason the I-140 was denied, your employer may be able to refile and you could still obtain a one-year extension.

Priority date had retrogressed. (i post this question with more details this time ).

You are authorized to remain in the US while your adjustment of status is pending.

Hi,I overstayed my B1 visa for 11 months before .Now I am in my country more then 3 years.I didn't return I-94 on my way back...

If the three years has already passed since you departed, then the unlawful presence bar no longer applies to you. Good luck with your visa.

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I been waiting almost 5 months for a letter from USCIS For immigration.

Consult with an immigration attorney directly. Tell him or her what you have filed to get the conversation started.

Do I need to get Another sponsor other than my wife if she has been working since 2 years and not 3 years?

You may receive an RFE if you mark the wrong box, which will slow down processing of the work permit and green card. It may be best if you get a...