My first thread was about this program (Virus Chaser) - always had an interest in Dr Web. http://www.viruschaser.hk/e_products.php Just out of interest, the firewall they use in their premium product, is it Dr Web's as well? And are they using an older version of Dr Web, or the latest? Be interested to see if this is as light as the doctor (or lighter on resources). I'm sure it works on Vista and probably later, because I originally installed it on Vista 32.