Office 2003

I have installed Norton?s Anti Virus 2005 but I am now having problems. When I either open a document or open a new document I get the following messages.

I get a box with window install in it and then another box opens with the message ?Norton?s Anti Virus 2005, and says that Norton?s Anti Virus 2005 does not support the repair feature please uninstall and reinstall.

Can anyone help