Go to this site and download HiJack this. (HJT) click here This is a zip file and will fit on a floppy disk if you need to obtain it from another machine. Create a folder called HJT on your hard drive and extract the file to this folder.
Open the folder and run the Hijack This file. Copy the log file to notepad and then post it here. click here You will have to register but it`s free. Wait for an expert to give you instructions. Do not attempt to delete anything on your own - this tool can do serious damage to your computer if it is used indiscriminately!