I am planning to start using Linux, as I am totally new this OS so I would like to invest my time with your help to straighten up things.

I am using LAN Internet (ISA Server) services. I know that I can browse defining the proxy setting in the browser but what about rest of the services for which i must need PROXY Clinet.

I need help is there any tool which can be used as a Windows ISA Proxy Client on Linux.