Sorry to tell you but by the looks of your log your computer is woefully out of date. Not the operating system itself but the protection programs you are running, your java and HiJackThis.
HiJackThis is currently at version 2.0.2
AVG Anti-spyware is no longer a stand alone program but a part of AVG 8 Anti-Virus. I don't know what versions of Zone Alarm or Webroot you are running but if they have not been upgraded to the latest versions then they too are out of date. AdAware 2008 is the most current version and it lacks the "punch" that the older version AdAwareSE used to have.
Spybot now is version 1.6.2 and Java is now at version update 6 version 12.
Since your HJT log is the old version I can see nothing in the log indicating a problem, however it is obvious there IS "something" there.
I would recommend that you Uninstall the old programs you have and get the new ones.
Please go HERE
Follow all the steps given exactly, saving all requested logs and then post back here with those. With the newer programs we should be able to see what may be going on. If instructions tell you to remove all items found then please do so.
Judy