You appear to be running a completely unpatched, original Windows XP. This is a serious sercurity risk and if not update to SP2 and brought up2date your computer will get infected again.
DO NOT update your version of XP at this time. Doing so will render your operating system useless; wait until we are finished disinfecting your system.
The version of Java installed on your computer is out-of-date. Install version 1.5.0_07 available from http://www.java.com/en/download/manual.jsp . Make sure you uninstall all older versions.
You are running HijackThis directly from your Desktop, this is not the preferred location. Move HijackThis to C:\Program Files\HJT. Run HijackThis from this location from this point foward.
Scan With HijackThis and fix the follow line:O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -kThere is nothing in your log to suggest you are infected.
Download WinPFind Extract it to the root folder of drive C ( C:\ ). This will create a folder called WinPFind in the C:\ folder. Inside C:\WinPFind is a file called WinPFind.exe. Double-click on this file to launch the program.
Now click Start Scan button and wait for it to finish. This program will scan large amounts of files on your computer for known patterns so please be patient while it works as it can take a while, upwards to 30 minutes or more.
When it is done, it will show the results of the scan. Right Click in the window and choose Select All. Then Right Click again and select Copy which will copy to the contents of the log to your clipboard. Then open a notepad window and paste in the log by pressing CTRL-V. Save it to a file and upload the text file here as an attachment.