Finally got a response from D-Link (not they're fault really ... mail server has been down at my dialup account) ... and the retards thought I was asking how to set up file and printer sharing!
So I shot off another mail to them.
I don't have a wired router, just the wireless one, which has 4 ethernet ports on the back, which I assume are to allow computers without wireless nic's to be able to connect.
The router is serving IP addresses 192.168.0.100 - 199, subnet 255.255.255.0, and the gateway's address is 192.168.0.1
My laptop is assigned 192.168.0.100 (Wireless)
Downstairs desktop is 192.168.0.101 (Wireless)
Leaving my upstairs desktop to be assigned 192.168.0.102 (Hardwired)
Except that the desktop isn't getting any of that information. On the router setup, I can see a list of assigned IP's and the computer name they're given to. The IP's stop at 101, and with the downstairs computer's name.
I tried hardcoding the subnet, gateway, and IP addy into the upstairs desktop, and it took the information, but it didn't do anything to change the situation (ie: the router still wasn't communicating with the computer.)
Now, here's a problem I've noticed, but forgot to mention as it slipped my mind ... when I do an ipconfig on this computer, the windows assigned ip and subnet show up. IP: 169.254.89.114
I try an "ipconfig /release", and nothing happens. "ipconfig /release all" and it says:
The operation failed as no adapter is in the state permissible for this operation.
The card is a Kingston KNE40BT, and I've never had a problem doing a release/renew before.