what do i do with Windows XP telnet

I wouldn't recommend telnet; it is inherently insecure. You should look into ssh instead. To answer your questions: 1. The remote computer needs to run a telnet server. By default few computers will run a telnet server. 2. Depends on the firewall on the remote LAN; most will block incoming connections using the telnet protocol. 3. Not sure what you mean by "flex on telnet". But to make any sort of remote connection you obviously need a working Internet connection.

thank u very much but what do u mean by ssh and dont mind my language i mean hack when i say flex

"I mean hack when I say flex" Thanks for explaining that. It tells me all that I need to know. Goodbye.

A lot of people hack media players like WD TV using Telnet, to modify firmware. So it's not illegal. A thank you would be nice, if I have helped.

Who said it was illegal? Either it's to do with connecting to a remote server, which I decline to help with, or it's about updating firmware, which I am not competent to help with.

@ijack fair enough. A thank you would be nice, if I have helped.