spammy email worm

several friends got emails characterized by a blank subject line and a message consisting of a clickable website link.  This caused the installation of a worm that sent out duplicate messages to everyone in their address book.  I may be infected but cannot tell after I opened the first one from a niece and it was an ad for a Canadian pharmacy.  Below are some of the websites from other similar messages I have received in the last few days.

 

kazymomy.110mb.com/kadezavi.html

lastpartynight.com/dir.php

csereklub.hu/indexx1.php

eziogeradi.it/index229.php

gymnicacenter.com/index229.php

decoracionfacil.net/index000.php

 

 

all but the first one has a .php extension.  I googled php and it is a file type created by a scripting language produced by a company named Tizag.com which helps people create their own webpages.  I suspect that all of the above links offer something for sale and spread their advertising through the address book.  I use Outlook Express but the messages above came from AOL, MSN and perhaps a few more.  Norton does not pick up anything when I receive these emails but I do not open them.  Websafelite calls tizag.com a safe site but it has links within it offering information and tutorials and they have the php extension.  The emails go out to several recipients at a time and nothing shows up in my sent box.  I consider tizag.com to be a rogue site.  is their any way to block anything from them or with  the php extension?  All they are is a spammy advertising company.

Thanks

 

 

[edit: Please do not direct link to potentially hazardous websites per the Participation Guidelines and Terms of Service.]