I'm thinking of upgrading to Windows 7 from Vista Business, and I just wanted to check, as I know some of you are fairly whizzy with computers - will it be possible, once I've run the upgrade, to run chkdsk from the DVD? I ask because chkdsk on my current Vista laptop is misbehaving - refusing to run at boot time - and I don't have the media for Vista (it's a Dell, who prefer to give you a Recovery partition, which is kind of useless for this).