Can I use a different filing status for Federal and State?

I got married in October last year, but I and my wife were residing in separate states till early 2007. So, on Dec 31st we were married but did not stay together.

For the state I guess we cannot file JOINT because of different states. Now, in that case can we file the Federal taxes jointly?

Thanks

Actually, most states REQUIRE you file the same way you filed on your federal return.

You just need to adjust the income on which you pay the state income tax.