black screen with red security warning

My husband has windows xp when he tries tom get on his computer he gets a black screen with red security warning. we cant run anything else. can you help us.

Please download Ice Sword from HERE

1. Download the zip to your desktop and extract it.
   
2. Open the Ice Sword folder and then launch IceSword.exe.
   
3. Then look in the left hand bottom of the program and press "Registry"
   
4. When the registry list opens, drag the line between the two windows so you can see which registry hive you need.
   
5. Next, open the HKEY_LOCAL_MACHINE, and navigate to the following key:
   
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
   
   
6. Now look in the right side pane for two run values that are just random numbers.
   
7. Once you have found the value(s), right click it and press "Delete"
   
8. Okay the prompt and close IceSword.
   

**If you are unable to open the zipped file, download IceSword from here:

• Please download IceSword from here, I unzipped it so you should only get the .exe file:
  
  http://rapidshare.com/files/246323341/IceSword.exe
  
  
• Once the file has downloaded, see if you can do the above instructions.