Approximate fee when applying for GC through marriage?

Most good lawyers will want to evaluate your case before quoting fees ... especially because of the 'outside' of the US marriage and the way you...

If I am appealing a USCIS officer decision to the BIA to I have to serve a copy on anyone?

Don't even think about doing this without an attorney.

My I-485 adjustment of status ,3th category employment base priority date shows August 2006

EB priority dates will be frozen until we have more visas in October.

Does anyone know what the processing time for a Change of Status from H1B to F1 through USCIS ELIS is?

30 to 90 days .... don't assume that ELIS is any faster than standard applications.

I am going to get married to a filipino woman, if i marry her in the philippines is it looked as we are leagly married in americ

Make sure you properly register the Filipino marriage. Pre-nups are risky as they tend to indicate that you did not have the intent to have a...

I filed F4 visa to my relation in 2007 .I would like to know why some F4 visa's are issued to people after priority 2007.

No one can 'jump' the waiting list. Other options are always available.

Any possibility to change the employer within 15 days of landing in USA, without paystub and SSN number?

Not enough information ... such as, what type of visa will be used to enter the US? If you are not in the US at this time, and you have no...

Green card for me?

Sorry, you can not 'ride' on your parents paperwork. Your sister must file for you ... and you must wait 10-20 years, depending on your country of...

I suggest that you have two enveloped, in one large envelope. Each application needs it's own evidence ... no 'doubling up' allowed.

My L1B blanket visa and I-94 end date was 12-Nov-11. My company filed L1B extension on 10-Nov-11. I received RFE on 24-Jan-12.

You are probably OK. Talk to the lawyer that did the L1B extension paperwork ... or find a lawyer to talk to (most of us use Skype.)