Hello abyssofmymind

Open HijackThis again, select "Do a System Scan only" and place a checkmark in the boxes before the following entries:

O3 - Toolbar: (no name) - {0BF43445-2F28-4351-9252-17FE6E806AA0} - (no file)

Close all other open windows and click on Fix checked, then exit HijackThis.

Do you really need both Yahoo and Google Toolbars, try uninstalling one of these using Add or Remove Programs

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Download and run StartUp Inspector.
This program will help you to decide what programs you disable from running at startup.
The Readme.txt file included has instructions on how to use it.

If your system is still running slow please work your way through >>This Tutorial<< that John McKenna has put together

Also please Update Java:
Go here and download the latest version of Java Runtime Environment (JRE) 6 Update 6
http://java.sun.com/javase/downloads/index.jsp
Go to Start > Control Panel double-click Add or Remove Programs.
Search in the list for all previous installed versions of Java. (J2SE Runtime Environment.... )
Select any found and click Remove.
Then install the version you downloaded earlier.

Hope this helps