I clipped this from a flyer that I hand out to my potential first time buyers:
"For married taxpayers the law tests the homeownership history of the homebuyer and his/her spouse. For example, if you have not owned a home in the past three years but your spouse has owned a principal residence, neither you nor your spouse qualifies for the first time buyer credit."
This means that if your husband hasn't owned a primary home in the past three years, you both would be eligible to recieve the credit. I'll post a link to a site that should answer any other questions you may have.