Hi Thomas

well i used the method of blocking these applications

ISa server management console.... client setting

firewall client's application setting

Name ==  Kaaza  Key Disabled  Value 1

this worked for me for quite some time but now a user told me that he changed that value to 0 from hi firewall client...this is the strangest thing i ever heard that  by modifying his firewall client he is able to bypass ISA ..becoz before this  these softwares stopped working when i disabled them

Can u tell me how ?