NIS 2010: Problems verifying subscription

I have Norton Internet security 2010.  It does not expire until March 2011.  We bought  a new computer and want to install it.  The Norton website told me that our password did not match when we purchased it so now I have to verify the purchase.  When I put the serial number in (and yes, I double checked it), I was told it was invalid.  Is there an 800 number to call?

 

[edit: changed subject to better reflect thread topic]