[Xymon] Client data not showing up on display

I am still new to Xymon coming from a long time Big Brother user. I have my Xymon server up and running and working and I am systematically walking through my servers and resurrecting my Big Brother clients. The Big Brother clients are working fine so far but I am having an issue with one of them. The client is running but it looks like the data is not getting sent to the server. I am looking for a good how to that describes how to install the client on a machine or if someone has already moved from Big Brother to Xymon how did they handle the their client transition.

TIA

-- John J. Boris, Sr. Head Freshmen Football Coach Camden Catholic High School