Sorry but I wasnt sure where to post this.  I'm having problems accessing certain sites.  When I go to internet explorer it finds most websites.  When I try to access microsoft, symantec, mcafee, etc. it comes up with page cannot be displayed.  I'm not sure why it is doing this.  This is the first time.  I checked all the setting and they seem to be correct.  Any help would be appreciated.  Thanks

 

Dimension 4600 2.8ghz

512 DDR ram

120 gb hard drive

windows xp home edition