Help with an persistent infection

Good evening.

I am a new user to the fora, and I seem to need help with an infection I have already tried to delete using an antivirus (avast) and Spybot-Search and Destroy updated to today.

After eliminating around 30 malware or more that it detected, started saying that my pc was free of infections, yet an advertising website called: internet-security-tools has persistently resisted to deletion.

Even worse, it is blocking my attempts to update another program for the purpose (ad-aware 2007) and is slowing down my internet signal.

If this is the wrong thread, I apologize since I am new to the fora.

If not, I am open to sugestions but please take into account that I am not myself an PC expert but an average user.

Thanks in advance,

John Perez

Consider posting in the Malware Removal forum and having someone take a look at your system. If you decide to have an experienced malware removal specialist assist you, please follow the procedure in this link to run scans and produce a HijackThis log:

• "BEFORE you POST"(READ this Procedure BEFORE Requesting Assistance).

After you have completed the required scans and produced the requested logs, start your own thread in the Malware Removal forum, making sure to post the HijackThis log produced from the above instructions.
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Thanks for the answer.

I'll follow the instructions given and I'll open again a new thread in the section recommended.

Thanks in advance, until later

John Perez.