Need dynamic DNS windows client

[ArizonaGuy31 at aol.com]

Hello every one:
This is my first post here and would greatly appreciate your help.

I have a web server rented and have 2 name servers setup for my domain using 
BIND 9 on redhat. I am doing this for learning and trying to have a setup to 
help my family members keep in touch.

This what I would like to do:

1. setup my name servers for dynamic updates (I think I know how to do that.)

2. give my family members a DNS client to update my server when they are 
online with their IP so they could join my domain. For example: if my uncle gets 
online, I could access his computer by "uncle.mydomain.com" and mydomain.com 
name server would have his IP address.

Is that possible? I think what I mainly need is a windows dynamic DNS client 
that is user friendly.

The other solution I thought of is to create a new zone like pc.mydomain.com 
and delegate it to one of the dynamic DNS services and then my uncle would be 
"uncle.pc.mydomain.com".


Any better solutions or ideas to get this working?

Thank you,
Sam