My OS is Windows Vista Ultimate Edition. Currently all of my browsers are hi-jacked and I consistently get re-directed to advertising websites, some programs fail to work correctly and I just don't know how to get rid of this virus completely. Thus far i've attempted to use Malwarebytes Anti-Malware, Kaspersky Anti-Virus 2010, Windows Defender, and Super Anti-Spyware. Several of those programs found infections but it is usually the same ones that are re-created later on, they aren't getting to the root of the problem and I have no idea what to do at this point. The most common file found is tdwlsp.dll in my system32 folder. At the moment Kaspersky is stopping something from using svchost.exe to download an install.exe program but it does so every few minutes. I am hoping someone can help me and tell me what to do.