What is the purpose of TweakBHO.dll (part of TweakMASTER installation)?
This DLL file enables TweakMASTER to automatically add host names of web sites you browse with Internet Explorer to DNS Accelerator. This DLL file must be registered during the installation process and then it should work as intended. There are certain third party utiltities such as "BHO Cop" which unregister BHO files since these are often used by "spyware" to track Internet Explorer activity. If you have unregistered TweakBHO.dll, then this feature with the DNS Accelerator will not work.