I re-formatted my computer today and upgraded from Windows XP 32-Bit to Windows 7 64-Bit. Using Firefox as my default internet application I am unable to connect to various different websites, mainly ones that I need to access to download vital software. This problem is not new to me as I tried to install Windows Vista 32-Bit just less than a year ago and I experienced the same problems. I am now thinking it has something to do with my router configurations and the Windows 7 OS. I would greatly appreciate help from the community as this will be the second time i've dropped over $300 on a OS that I can't return and can't manage to function properly.