You have a very serious infection. You will need help to remove it.
Please read and follow the steps in this preparation guide
As the guide says, once you have completed those steps, post your HijackThis log in a new topic on the Bleeping Computer HijackThis Forum
, not here.
Once you have posted your log, please be patient, the forum is busy right now and it may take a few days before one of the helpers picks up your log. While you are waiting, do not make any changes to your computer such as installing programs. Do not attempt to fix the problem on your own. Such actions will only make it harder for your helper to diagnose and repair your computer.
After posting your log, the only thing I suggest you do is to back up all your data files. They are the only thing that cannot be replaced.
If by any chance you do not get a reply after five days, post a reply to this topic
and include the url of your HijackThis topic.
One tip for getting your log picked up: be as descriptive as you can in your topic title. If your scanners have named one or several infections, put those in the title. If all you have is a file name, mention that.