Product Key Incorrect message when installing 2007 Home and Studen

I received a laptop for Christmas that had a trial version of Microsoft
Office Home and Student 2007 pre-installed on it. I already have the full
version of this software on a disk, so I uninstalled the trial version and
tried loading the software on my computer, but still received the message
that the product key is incorrect. I am definitely entering the correct
product key from the sticker on the inside of the case. The software from
this disk can be loaded on three computers and has only been used on one
other computer, which also uses VISTA and is working just fine. Why am I
getting a message that the product key is incorrect? I don't have access to
the Internet on this computer yet -- could I be receiving this message
because I am not connected to the Internet?

You checked your Add/Remove dialogue (or whatever Vista calls it) for any
remains of your trial, eg activation assistant etc?

"Kundrum" wrote in message
...
I received a laptop for Christmas that had a trial version of Microsoft
Office Home and Student 2007 pre-installed on it. I already have the full
version of this software on a disk, so I uninstalled the trial version and
tried loading the software on my computer, but still received the message
that the product key is incorrect. I am definitely entering the correct
product key from the sticker on the inside of the case. The software from
this disk can be loaded on three computers and has only been used on one
other computer, which also uses VISTA and is working just fine. Why am I
getting a message that the product key is incorrect? I don't have access
to
the Internet on this computer yet -- could I be receiving this message
because I am not connected to the Internet?