I think the best way might be consulting a professional attorney.
As you are already out-of-status, you might be interested in
reading 8 CFR Sec. 284.1 (b). Then you may understand why you need
professional attorney in this case.
TITLE 8 OF CODE OF FEDERAL REGULATIONS (8 CFR)
=> 8 CFR PART 248 -- CHANGE OF NONIMMIGRANT CLASSIFICATION
=> Sec. 248.1 Eligibility.
=> Paragraph (b) Timely filing and maintenance of status http://uscis.gov/lpBin/lpext.dll/inserts/slb/slb-1/slb-9976/slb-25690/slb-25703?
