Green card holder applying for wife.

There is no minimum.

Can I file the I-539 together with I-765 on a L2 visa?

Follow the instructions on respective forms and ensure you add respective fees with each application. Do not send one check by adding the fees.

I140 pending for 10 months and no response to the SR's

The normal processing time for Nebraska Service Center is 4-5 months. Was a RFE issued? Was it timely responded to?

It is best to request your school to send you a copy. At most, USCIS may request it through an RFE and you can provide it.

I'm an on F1 and a company I worked for back home is applying for L1B for me. Are my chances better applying here or back home?

It is a call your company will make depending on what is advised to them.

Can another company file GC for me ?

You are running against time here if you intend to apply for residency. I don't believe you have time to look for answers on a forum. Consult...

Unable to update departure record

Are you making a new application to the USCIS or to U.S. Consulate for a visa?

I went here in US 2007 but since i went here im not working. im now a US citizen here..

You can petition for your husband. Since you are not working, your mother or brother can co-sponsor provided they are either USC or permanent...

Do my parents need a lawyer?

You have not mentioned how and when they entered the U.S. Ideally talk to an immigration attorney as more information is required to respond.

My employer is sposoring my Green Card and the I-140 was approved in December 2009. Can I change jobs/employer?

I am assuming your are working on a temporary work visa, namely, H-1B or L-1. If so, your new employer will file a similar H-1B petition. You...