401k Rollover Tax 401K Plans

I started a new job in 2007 and rolled over my old 401k to my new company's plan. I received a tax statement from the old fund manager for the total amount of the rollover. My question is this, do I have to pay tax on this money for 2007? I am under the understanding that as long as it's rolled to a "qualified plan," which it is, then the entire sum is rolled over tax free. Are they just sending me a statement because the account was closed?

Thanks