Q. I installed one of the recommended telnet clients, but the Windows telnet keeps starting up when I click the link!
A. Microsoft has made it as difficult as possible to change your default telnet client. There is no easily accessible file type for "telnet://" URLs, so you must set it manually.
You can download a registry file here. If your client is not listed, or you would prefer setting the key value yourself, then open regedit and find the following key:
Change it to the full path to your telnet client, followed by a space and the characters "%1".
Example: c:\program files\mytelnet\telnet.exe %1