Final answer:
To change the directory to the C: root, use 'cd\', then 'dir' to list directories. If 'Temp' doesn't exist, create it with 'mkdir C:\temp'. Finally, for help on 'dir', type 'help dir > C:\temp'.
Step-by-step explanation:
To change the directory to the root of the C: drive in the command prompt, you should use the cd\ command. This command changes the current directory to the root directory of the drive. Once at the root of the C: drive, use the dir command to perform a directory list. If you see a 'Temp' directory listed, you can move on to the next step. If there is no 'Temp' directory, you should create one with the mkdir C:\temp command. Finally, to get help information about the 'dir' command and save it into a file in the 'Temp' directory, you should enter help dir > C:\temp in the command prompt and press enter.