(Don't know if you saw it or not but if you did I apologize for that spam poster that sneaked in ahead of me, I have deleted his post and banned the poster.)

Don't worry about the Host file.
You need to follow the instructions given on our Read Me sticky and copy/paste the logs back here. Then we can better advise.

Before you do all the requested scans please do the following:
Disable Spybot's TeaTimer

* Run Spybot-S&D in Advanced Mode
* If it is not already set to do this, go to the Mode menu
select
Advanced Mode
* On the left hand side, click on Tools
* Then click on the Resident icon in the list
* Uncheck
Resident TeaTimer
and OK any prompts.
* Restart your computer

Also please TURN OFF AdAware also, you can hopefully do this via the program itself, if not then go into Services and Disable it, reboot.
The same advice goes for SUPERAntiSpyware, please TURN it off.
Unless you have the paid versions of AdAware and SUPERAntispyware then the real time scanning of those two programs do absolutely nothing except waste valuable resources.

Both of those programs can actually interfere with fixes attempted.
I will say however, you do not appear to be using either an anti-virus program or a firewall, making it doubly easy for you to get infected. Can you tell me why you aren't running either?

Also, for heavens sake turn off, better yet, UNINSTALL that Tune Up Defrag program. There is no need whatsoever for a program like this to be even on the system, much less running all the time.