If you petition your wife as a permanent resident, it will take approximately 2-3 years before an immigrant visa becomes available to her. You can file and later "upgrade" the petition once you became a U.S. citizen. This will significantly lower the waiting time to about 3-4 months if she is in the U.S. Until that happens, the petition itself does not legalize her stay in the U.S.
Answered on Aug 18th, 2011 at 10:22 AM