everytime i log on, there is always a small window that shows up, stating "Windows cannot find 'File not found: D:\windows\sembako-sembako-cgzjmji.exe.' Make sure you type the name correctly, and then try again. To search for a file, click the start button, and then click search."

I know that this event is primarily caused by a worm and so i downloaded the autoruns (an instruction provided here in bc.com) and tried to delete it from the list and registry. In fact, i've discovered other worms in the list like bron-spizaetus and tok-cirrhautus wherein their image path is "file not found: windows\..." as well. Only the problem is, after i delete these three from the list and registry, once i restart the computer or just refresh the list, they all show up again.

In terms of checking if my computer is virus-free, i've run 2 antivirus software, namely norton and antivir xp, and results show that my computer is malware free.

It's really frustrating to see this annoying window popping up everytime i turn on the computer. It would really be nice if someone will be able to help me get rid of this annoying message.

Thanks in advance.

Time to post a HJT log. Preparation Guide For Use Before Posting A Hijackthis Log
Follow it to the letter and they will solve your problem.