Connecting Wireless to Dial-Up Via ICS

I have a Dell Desktop. It has dial-up. I have a Dlink DI-525 wireless router
connected to it via the Ethernet card installed in the desktop. I have a
notebook with a wireless 802.11G card. As of last week I could use the
internet connection sharing on the desktop to surf the web on the notebook.
It would see my dial-up connection (ark.net dial up). But dumb me. I
upgraded the firmware on the Dlink and now it won't see the dial-up anymore.
It sees the desktop just fine. I have directories shared on the desktop and
the notebook can see them. But on the notebook, instead of it saying ark.net
dial-up in the network settings. It says internet connection. And when I
open up that connection it shows the notebook going thru a gateway and then
going to the internet. And, of course, no internet. I have the Dlinks DHCP
enabled. I reset the ip address so it wouldn't conflict with the internet
connection sharing assigned ip address (192.168.0.1) I believe the desktop
acquires an ip address from the dlink as well. It is 192.168.100.1. And the
notebook is 192.168.100.2 (per the settings on the DHCP). I have no idea why
I am getting a network connection called internet something or other instead
of the actual name of the internet dialup service. This happened the first
time I set this up. For the life of me though, I can't remember what I did
to fix it.

Any suggestions? I would love to get high-speed. But they don't offer it
here yet.So I'm stuck with dial-up.