Como Defender me puede proteger contra cookies maliciosas?

Hola amigos.

El problema es el siguiente, tengo instalado OneCare y Windows Defender en
mi laptop y el dia de ayer scanee con Panda ActiveScan y me detecto 21
archivos infectados con Spyware y todos eran en la carpeta Cookies. He
borrado las cookies manualmente pero me siguen apareciendo, como puedo hacer
para que Windows Defender tenga listados estos archivos y los bloquee?.
Intente desinstalando OneCare y Defender para instalar Panda Antivirus 2007
(Tengo el original licenciado) pero no me permite instalarlo porque registra
mantener OneCare instalado (Pero eso es otra historia...). Les muestro el
resumen de Panda:

C:\Documents and Settings\Daniel\Cookies\daniel@2o72].txt
C:\Documents and Settings\Daniel\Cookies\daniel@ad.yieldmanager1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@ads.pointroll1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@advertising2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@atdmt2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@atwola1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@c5.zedo1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@citi.bridgetrack1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@com1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@doubleclick1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@fastclick2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@hitbox1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@overture2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@perf.overture1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@questionmarket2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@realmedia2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@statcounter2].txt
C:\Documents and Settings\Daniel\Cookies\daniel@terra.com1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@tribalfusion1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@www3.addfreestats1].txt
C:\Documents and Settings\Daniel\Cookies\daniel@zedo[2].txt

Daniel De La Haza