steps to add node in cassandra 1.1.2

[prasenjit mukherjee]

I am using cassandar version 1.1.2. I got the document to add node for
version 0.7 : http://www.datastax.com/docs/0.7/getting_started/configuring

Is it still valid ? Is there a documentation on this topic from
cassandra twiki/docs ?

-Prasenjit