NIS 2010 - Intelligent Updater Problem

Hi - I am running NIS 2010 on a new computer that is running Windows 7.  I am unable to update the virus defintions with the manually downloaded definitions from the Intelligent Updater (it tells me that the updates failed).  I had done updates this way successfully previously with NAV 2009 and Windows XP.  I have to do it this way because there is no DSL available where I am at.  I tried the updates via Live Update but that failed also.  Any one have any ideas?  Thanks.