PVS:
1) Yes, you CAN file jointly if both you and her choose to be treated as residnet aliens. You need to attach a statement to your tax return explicitly making that choice.
2) You will have to complete Form W-7, get a photocopy of her passport notarized as a true copy, then attach both the W-7 and the photocopy to the completed Form 1040 (leaving her SSN area blank). Mail the entire packet to the address in the W-7 instructions.
3) She has to be in the U.S. for 183 days since her arrival and at least 31 consecutive days in 2006 to file jointly with you. She will meets these requirements on the 150th dat of 2007, which is 30 May 07. You should file on 31 May 2007.
4) You CAN claim the airfline ticket as a moving expense on Form 3903, but NOT her visa expenses.
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