Cisco 2600 change telnet password

I am new to Cisco and need to change my telnet password on our Cisco 2600 router.  I looked through other postings and found some info but could not get it to work.

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I see this should do it

The ability to telnet to a Cisco router makes administration easier. This simple configuration enables telnet logins to the router and protects them with a password.
To enable telnet logins with the password PaSsWoRd:

conf t
line vty 0 4
password PaSsWoRd
nashsupportAuthor Commented:
The router has a password assigned already, does that change any of the command line items ??
there are 2 passwords one is the telnet password to enter and the enable password to have access to command line and for changing configurations. if you are changing telnet password then that would affect the password that you first use to telnet into the router .
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nashsupportAuthor Commented:
So just login to the router via telnet and enter the command line items above ?? I tried that and get the following  "invalid input detected. "
do this

telnet to the router and give the password if you already have one

once you do ,telnet <ipaddress>
it would ask for password

router> en
password: <here give the enable password> and press ENTER
router# conf t
router<config># line vty 0 4
router<config-line># login
router<config-line># password  PasSWord  (Here PasSWord = the new password that you need to change)
router<config-line># exit

router<config># exit
router# wr mem


Now exit out , telnet again and check ..

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nashsupportAuthor Commented:
thanks a bunch, worked great
Glad you got it working..

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