Antivirus and scams please help?

I have yahoo as my homepage on internet explorer, recently, when i click on internet explorer, it automatically opens http://thesafetytool.com website with an added windown warning me of a virus w32.myzor.FK@yf, which it says keeps stealing passwords.

I have an old version of mcAfee antivirus and i get updates. It doen't seem to be helping me much. Am told some antiviruses are good for some specific hardwares... is it true. How do i get rid of this virus. Any sites with a free antivirus which can suite my machine;

鈥aximum Memory Capacity: 1024 MB

鈥urrently Installed Memory: 160 MB

鈥vailable Memory Slots: N.A.

鈥umber of Banks: 2

鈥ual Channel Support: N.A.

鈥PU Manufacturer: GenuineIntel

鈥PU Family: Intel Pentium II processor Model 5, Stepping 2

鈥PU Speed: 266 MHz

System Manufacturer: SAMSUNG Electronics

System Model: SENS 750

Motherboard Manufacturer: SAMSUNG Electronics

Motherboard Model: SENS 750

Antivirus and scams please help?photoshop

thesafetytool is malware. Instructions for removing it can be found here:

http://answers.yahoo.com/question/index?...

Antivirus and scams please help?symatec

I can give a few links that offer free virus and spyware removers...!You may be having a virus or spyware installed on your PC. Norton, AVG , Avast are free antivirus software. Ad-aware, Ewido are free spyware removers. You can download free softwares at