Linksys Router (WRT54G) Help! Changing IP addresses!

[Kevin Cheng]

VNC List:

I am having some trouble setting up my RealVNC on some computers
behind my Linksys WRT54G wireless router.  I have a basic
understanding of how everything works, but I'm getting tangled up in
the port forwarding and DHCP stuff.

Here is the main problem:

On my server desktop, I am running VNC Server along with DynDNS
Updater so I can keep up with the dynamic Comcast High-Speed IP
address.  Therefore, when I type in xxx.dyndns.org, I should be able
to access my computer.  Here is the problem however:  Sometimes when I
restart the desktop with VNC server, the IP address will change
(192.168.1.102 to 192.168.1.106).  When it switches IPs, 106 does not
have port forwarding on and I can no longer access it.  Because I am
still running testing, I simply open up port 5900 on 192.168.1.106 and
the xxx.dyndns.org address will work out fine.  Attempting to access
it via the actual IP address (192.168.1.106) works fabulously.  I just
can't seem to figure out how to keep up with the DHCP giving me new
IPs.  (Keep in mind, the above testing deals with all LAN-side
testing.)

I have tried setting a static IP, but I don't know the DNS
information, so I think that contributed to my loss of Internet.  What
other options are there?

Thanks!

Kevin Cheng/kcheng2 "at" gmail.com