TCP/IP client says CONNECTION REFUSED!

telnet 192.168.1.214 8888

tried this it says telnet is not recognized as an internal or external command, operable programme or batch file

NOTE: I have a wireless router and modem , the ethernet connection from modem goes to WiFI router's back and my laptop is connected to internet via. WiFI whereas from the same back end of the D-Link router there are various ethernet slots where the ethernet shield is connected to.