Any illegal stay (out of status, provided one entered the US legally) and unauthorized employment are forgiven while applying for adjustment of status as a spouse of a US citizen.

Do I need a lawyer to apply? >>> Depends upon how much you can work on the forms yourself, if you are thinking of hiring a lawyer to address your overstaying issue, I don't think you need one.

You aren't married yet? >>> You have a long way to go...in the sense..you have to prove your marriage is a bonafide..not just for papers.

You need to file I-130 and I-485 with their supporting documents, after you get married and after spending sometime together.

I hope this helps.

(IMPORTANT: I am NOT a lawyer. This is my personal opinion and should not be used as a legal advice)

- Jangali Maanab

 Who needs to fill the forms?
1. I-130: Your spouse (US citizen)
2. I-485, I-765, I-131: You (Beneficiary)
3. I-693: A civil sergeon designated by USCIS. Find a civil sergeon close to you, in your area, from USCIS website. This form is sealed in an envelope by the civil sergeon and is only meant to be opened by USCIS.
4. I-864: Your sponsor, I assume your sponsor is your spouse. Even if you have another sponsor, your spouse should file I-864.
5. G-325A: Both of you (You and your spouse). There are three G-325A forms to be filled. Your spouse files ONE for I-130; you file TWO G-325A ( ONE for I-130 and ONE for I-485)

I don't think you need to file the supplement form. However, I am not so sure and therefore won't make any further comments.

Explore few immigration forums. You may also post your questions there . Here is a good one: http://www.immigration.com/


(IMPORTANT: I am NOT a lawyer. This is my personal opinion and should not be used as a legal advice)

- Jangali Maanab

 thank you so much jangali manab..your suggestion is really appreciated. 

 I haven't make my birth certifcate in Nepal.. I can't Nepal to get it .. But I have nepali citizen n translation too ? Shall I present my nepali citizen instead of birth certifcate in uscis for petition??

 Usually, USCIS looks for both of your parents name in the birth certificate and nepalese citizenship doesn't include mother's name. That might be the issue if you send citizenship certificate and its translation instead of birth certificate.
So, I would answer as: NO

If you had registered your birth in VDC or Municipality at the time you were born, it would be great. If not, you may still contact your area office back home to get one, but this will be the verification of your birth. You don't have to be physically present in Nepal, your family members or relatives can get the certificate, on your behalf.

(IMPORTANT: I am NOT a lawyer. This is my personal opinion and should not be used as a legal advice)

- Jangali Maanab

 Do I need to send copy of lease of renting apt ?? We r living in private house and the room is rented by other friend s.  we r paying rent for my  room only .. We don't have lease and any paper signing for room rent ??  
What do I need to send showing we r living together ?? Can I sign lease with friends and send that document ??
pls share some info

 Lease document is one (among many) that serves as a proof to USCIS that you two have been living together, as a couple. If you are paying rent to Mrs. Y, ask her to include both of your names in the lease. Send the signed (by all who are renting the premise and Mrs. Y) lease to USCIS along with I-130. Don't forget to send few letters you and your spouse receive in that address, where you live.
(IMPORTANT: I am NOT a lawyer. This is my personal opinion and should not be used as a legal advice)
- Jangali Maanab

if my adjustment for status is denied, what would  be follow up that i need to do?? Can i apply  new  file again???

mero hijo thiyo interview....aba i-9 liyera a vancha officer le ..k garne ho ?

 mero inteview bhako 5 month bhayo, answer akko chaina. 
my lawyer went with info pass for further answer but still no decision. 
interview ma mero ra budi ko, 2 ota answer  match garena. dont know if that 's the reason for delay.
tapai ko interview kasto bhakko thiyo.