hi does anyone know what is the best way to setup ad-adware professional custom scanning ?

Did you review the help file content? Additionally, review the forum/faq topics or try asking for specific advice in the support forums (for the real-time monitor features such as ad-watch):


http://www.lavasoft.com/support/faqs.php
http://www.lavasoftsupport.com/index.php?showforum=1