He has two choices:
Choice 1: File non-resident tax return. He will get $3500 exemption, itemized deductions and moving expenses for all of you. It this makes his taxable income nil or low, he can go for this.
Choice 2: You can file resident tax return as Married Filing Jointly. You will have to wait for 5 months to file your tax return till you meet the Substantial Presence Test in 2009.
You will get standard deduction of $10,900 and exemptions for both of you and the daughter.
You must both declare your worldwide income for 2008. If you have any foreign income, and on that income you paid taxes in the foreign country, then you can claim foreign tax credit (Form 1116) or you can use Foreign Earned Income Exclusion (Form 2555).
You will complete forms W7 (application for ITIN) for your spouse and child and attach with your tax return.
You can also deduct moving expenses. Use form 3903.
Read about L1 tax filing:
Your U.S. Tax Return: The U.S. Visas