IS there any problem , if i have travel document( re entry permit) for two years but im not gonna travel?

No problem at all. You don't have to travel at all and you don't have to cancel your document.

My question is about filling out immigration papers is necessary to have my husband last name?

It's not necessary to change your name but a matter of preference. If you plan to change your name you may as well do it now and use it on the...

Is it possible for two family members to apply for a sibling for Green card?

Yes, it is possible and quite common to do. Your sister can use whichever case that has the faster priority date that becomes available.

My Case Status Receipt Number

This is very common in the early stages of a case. Don't worry. Just give it more time and you will see it after USCIS updates their database

What's the best way to go about obtaining a 212 e wavier?

She may very well need a waiver. Have an immigration attorney review your wife's documents including the DS 2019 forms, and visa copy. Then...

Being out of job for a few months while holding a GC (NIW category)

It sounds like you are trying to find a better job and will be unemployed only temporarily. Based on your scenario, you should not have problems...

DUI in 2000 dismissed can I apply for green card ?

As long as you otherwise qualify and meet all other requirements, this DUI should not stop you from being able to adjust.

F-2 will be valid as long as the principal's F-1 is valid (continuously maintained status), and neither the F-2 dependent and F-1 student did not...

Can I quit job and give up H1B to move to my husband, and remain legally stay in the US with pending greencard application

You should be fine with a pending case. Just be sure that you file all the documents properly in order to avoid any issues. Consider hiring an...

My f1 visa is expiring in june 2014 and my husband is filling for me by august. what should i do not to get in trouble?

You should be living together to provide bona-fide marriage. Do yourself a favor and consult with an immigration lawyer.