Steps to follow:

• Create a temporary folder
• Download this utility in an temporary folder.
• Run this utility.
• Disable the System Restore option if you are using Windows Me/XP
• This will display an windows with two options "browse" and "Scan"
• Browse the drive/ Folder you wish to scan
• Select the Scan option
• This will detect and remove all strains of this worm
• Upgrade your copy of Quick Heal using the Quick Heal Update option

Disable/Enable _Restore option on system having Windows ME and Windows XP:

• Windows ME and Windows XP utilizes a backup utility that backs up selected files automatically to the C:\_Restore folder. There is no access to delete files kept as backup in _Restore folder.If W32.Klez.H infected file is stored in _Restore folder as a backup file, then in such case Quick Heal will be unable to delete these files.
• Below steps will help you how to remove the infected files from the C:\_Restore folder.

Disable _Restore option

• Double-click System, and then select Performance tab.
• Click File System, and then click the Troubleshooting tab.
• Check Disable System Restore.
• Click OK, and then click Close. Save the setting and restart Windows.
• This disables _Restore folder.
• Run Quick Heal or killklez.com utility and disinfect your system

Enable _Restore option

• Go to Start / Settings / Control Panel.
• Double-click System, and then select Performance tab.
• Click File System, and then click the Troubleshooting tab.
• Check Enable System Restore.
• Restart your system.

Disable _Restore option

• Go to Start - Right-click on My Computer and then select Properties.
• Select the "System Restore" tab.
• Check "Turn off system restore" or "Turn off system restore on all drives."
• Click Apply, and then click OK. - Reboot your system

To enable Windows XP System Restore:

• Go to Start.
• Right-click on My Computer and then select Properties.
• Select the "System Restore" tab.
• Uncheck "Turn off system restore" or "Turn off system restore on all drives."
• Click Apply, and then click OK
• Reboot your system