RESET PASSWORD

After 3 days of non-use, I turned on my computer and when the Vista password screen came up, I entered the only password I've had for the 4 months I've owned the system.  It would not accept it.  Up came "reset password", however, I never made a reset password disk so I could not use the wizard. 

 

 HOW DO I GET INTO THE SYSTEM TO CHANGE MY PASSWORD AND ACCESS MY COMPUTER? Technical help suggested I hit ctrl alt del, but that didn't work either.  HELP PLEASE. I run a business on that system and have pending reservations.  Thank you  Baja