norton internet security 2009 NIS update failer

I purchased a laptop about 3 months ago. I also bought norton internet security 2009 but for some reason now it will not install the nis updates. I would like to know if there is a way to fix this issue, some people have told me to download the new 2010 version and remove the old one. But I bought the 2009 and do not want to purchase another. Any help would be much appreciated.

 

Thanks D