Linksys wireless router question - static ip related

[Monolith]

I have a Linksys 54G router with 3 machines wired to the router itself and 7 laptions that connect via wireless cards (not all at the same time). I want to leave DHCP enabled for the laptops, but I need one of these machines to have a fixed IP so that I can forward all http and ftp requests there. Right now that machine has 192.168.1.103 for ip, but when I set it up, I had port forwarding set to 192.168.1.100 - which was the ip at the time. Is there any way to have this machine always get 192.168.1.100? I tried hard-coding the ip, and disabling dhcp, but that didn't work and would not work for what I want to do because I don't want to assign IP's for the laptops.
Any ideas? Anyone doing anything similar? I have a dynamic dns client on this machine that updates my DNS servers with the IP of the router and that seems to be working fine so far.

 

[Colebert]

for linksys static ips are ranged .2-100. you can't have a static ip of 100+ because those are assigned to the DHCP. To get a static you have to go into your TCP/IP setting and configure as follows:

IP: 192.168.1.n (where n<100) [pick your favorite N]
SUBNET: 255.255.255.252 (auto configured w/ IP)
GATEWAY: 192.168.1.1

DNS#1: (enter your DNS address)
DNS#2: (enter your DNS address)


Viola! Static IP. If i read your question right.

 

[gunrunnerjohn]

Well... you can actually configure the DHCP server to assign addresses in any range you choose.