Try my other suggestions. Ditch that program as it won't work unless NIS is installed.
EDIT:
After some research...you may have a corrupt profile. Have a look here...
http://support.microsoft.com/default...;EN-US;Q303807
C:\WINDOWS\system32\
WININET.dll<-- we also need to check this file for an infection as it will cause the same error message.
Please run an online scan at
http://www.pandasoftware.com/actives..._principal.htm
Select the “Autofix/Clean” option and save the activescan log. Then post that log in your next post.