No

Also a step parent cannot file a petition for someone unless the marriage that formed the step parent relationship
Wont help you anyway.
QUOTE
Who May Not File This Form I-130?
1. An adoptive parent or adopted child, if the adoption took place after the child's 16th birthday, or if the child has not been in the legal custody and living with the parent(s) for at least two years.
3. A stepparent or stepchild, if the marriage that created the relationship took place after the child's 18th birthday.
http://www.uscis.gov/files/form/I-130instr.pdfOnly your biological parent can file an I-130 for you.
QUOTE
Who May File Form I-130?
1. If you are a U.S.citizen you must file a separate Form I-130 for each eligible relative. You may file a Form I-130 for:
C. Your unmarried son or daughter age 21 or older; (F-1)
D. Your married son or daughter of any age; (F-3)
2. If you are a lawful permanent resident of United States, you may file this form for:
C. Your unmarried son or daughter age 21 or older. (F-2)
http://www.uscis.gov/files/form/I-130instr.pdfMore here:
http://travel.state.gov/visa/immigrants/ty...types_1306.htmlTime it will take to get a visa.
http://travel.state.gov/visa/frvi/bulletin...letin_4177.html