Configuring Ports on HP Procurve using Telnet

Hello

I am pretty new to configuring HP Procurve switches as i am used to Cisco switches. I want to extended a vlan to some more ports but cannot figure out how to do it.

I can telnet into the switch but i dont know the commands on how to change the vlan to use which ports.

Can anyone point me in the right direction

Thanks

Scott