help with .dll

i have just downloaded spy bot search & destory program from the web , and whilst running it i have been prompted that i have parts of WDENGINE.dll missing, i them went on the web to ask what WDENGINE.dll was and how to get a patch... so good so far... after a short surf i came up with a site that instructed me in the means...this is where my problems start.. after following the instructions to go to my control panel.. add and remove programs and select the wildtangent web drivers and remove. this is the problem because i have no such files that i can find.... some one please help...