Is the NSCLIENT needed for what I am doing?

I am planning on running check_oracle on my linux nagios box to monitor a windows oracle box. I do not want to put the agent on the windows box if possible. I am only going to be using the check_oracle --login to send a dummy login to see if oracle is running. As far as I can tell it should only use the oracle client and sqlplus that I have installed on my linux nagios box. the other check I will be doing is a ping test which is run from the nagios box.
So am I correct in thinking I do not need to install the nsclient on the windows box.

Also what config files will I need to modify to do these two checks?

thx in advance.