The Windows 7 is a trial run due to lock out in 3 days.
how can I quickly do away with it and install my genuine Vista in its stead?

Thank you all in advance

The Windows 7 is a trial run due to lock out in 3 days.
how can I quickly do away with it and install my genuine Vista in its stead?

Thank you all in advance

If you are needing to retain your information, I'd advise you to backup your data to another drive. Uninstall all your registered software. If you cannot get an external drive, partition the hard drive to your file size and move those files over. Install Vista. Once installed, move all the files back over and repartition your drives. I recommend Hiren's Boot CD in order to do this. It is totally free. :)