I read over the OP again and started reading in between the lines. You're talking about Windows Backup in Windows 7, right? Like what's been posted above, you can create a backup in an external harddrive. That's probably the best overall option.
As for off-site (in case of fire or other disaster) if you're not using much in storage ( < 5GB of stuff you want to keep), you can create a Windows Live account and use Windows Live Mesh to backup your stuff. It's free. (You also get access to Microsoft's online Office Apps)
If you really don't care about losing your harddisk (buy another and reinstall as needed, perhaps?), you can just disable the nagging, if you wish.
Chris
As for off-site (in case of fire or other disaster) if you're not using much in storage ( < 5GB of stuff you want to keep), you can create a Windows Live account and use Windows Live Mesh to backup your stuff. It's free. (You also get access to Microsoft's online Office Apps)
If you really don't care about losing your harddisk (buy another and reinstall as needed, perhaps?), you can just disable the nagging, if you wish.
Chris