Hi Alan,
Once you have recovery cd
Insert the DVD and boot from it. You'll get a black and white screen:
If this doesn't appear, it may be the DVD is not a Windows bootable DVD. Assuming you get this message, press a key (spacebar or anything else). If you don't press any key within about 5 seconds, it will boot from the hard disk.
Continuing to boot from the DVD you'll see a loading progress screen.
This typically takes 2-3 minutes. When complete the first options screen appears.
Change any options if desired, and press
Next.
To start the
Recovery Console, select
Repair your computer. 
Unless you have multiple copies of Windows installed, only one choice will appear. Select your OS, and press
Next.
Here you can pick from a number of useful options.
Startup Repair looks for damaged or missing key system files and will replace them if a problem is discovered.
System Restore replaces the registry with a previously saved one (jump to System Restore).
Windows Complete PC Restore restore the entire computer from a previously saved backup (if it was made). This feature is only available on Business and Ultimate editions of Vista and Professional and Ultimate versions of Windows 7.
Windows Memory Diagnostic Tool to check your system memory for errors.
Command Prompt for advanced users who wish to manually perform an action (jump to Command Prompt).
Please select
System RestoreAfter selecting System Restore from the options menu, the screen appears:
Press
Next.
From the list of restore points, select the one you want to restore. You'll want to pick a date prior to the problem event, such as before an installation that you suspect caused the problem. You do not want to pick the newest restore point, since that has saved the very last problematic registry.
Press
Next.
If you have multiple drives, in rare cases there may be restorable information on those other drives. The status will confirm which drives have recovery information. Check any drives that you want to recovery (including the system drive). Press
Next.
This is the final confirmation. Press
Finish to begin restoring the selected restore point.
It may take 10 minutes or more, so be patient and don't power down or reset the PC while the restoration is occurring. After the reboot and logging on again, Windows will confirm the restore completed successfully.
If you don't like the results of the restoration, you can return to System Restore and choose a different restore point.
