I just finished my first barebones computer and am having trouble getting it connected to our home network. The computer is using an Intel D945GCPE motherboard with a Realtek RTL8101 Family PC-E Fast Ethernet NIC (NDIS 6.0) integrated connection. I tried downloading the driver from Realtek, but when I try to set up a network connection, Vista (64bit) is not detecting the network. We have two other computers hooked up to the network, one of which I am using to post this, so I know the problem is with the computer. What am I doing wrong?check the cables.
have you check the IP address of the Vista computer?
also the try to ping the vista computer with another PC and VICE versa.
Check firewall (disable it if possible)
I have the same ISSUE with my laptop. I use a wireless connection to our network. We have one other laptop/wireless running XP that has no problem finding the network and one desktop PC that is wired.

For the wireless connection, I usually have to turn off the wireless beacon and then turn it back on. Make sure that vista is using the same network name. OK, I feel very stupid. I thought that what was on the motherboard would allow me to connect wired and wirelessly. Can I only connect with an Ethernet connection? I tried installing a Network Adapter Card (Hawking Wireless LAN PCI card) and its driver---still no joy with the same error. No driver was recognized and the device was unidentified under the Device Manager.

Also when I WENT into ipconfig to find the computer's address, I got an error that said:

Media disconnected Connection-specific DNS Suffix

Tunnel adapter Local Area Connection *6:
Media State.....: Media disconnected Connection-specific DNS Suffix

Any more ideas?Make sure that its properly installed under device manager.

Don't worry about the IPV6

look for the IP address under IPv4
make sure that your router is DHCP is enabled
check the cables make sure its properly plug-in I don't even know how to find IPv4. My router is DHCP enabled and everything's plugged in because I'm using the wireless connection on the computer I'm typing on now.

Device Manager recognizes the Realtek Network adapter and says it is working properly.

I realize that I didn't make it clear that the router is connected to a computer (desktop). The laptop I'm using now is connected wirelessly to the network. I'm trying to add a third computer to the network. It happens to be running Vista instead of XP, like the other two computers.

Could someone tell me if I need to install a card to the computer I'm trying to add since I don't intend to use a wired connection?More information:

I used the DOS command "netsh wlan show all" and DOS says there is no network adapter. How can this be when it shows up functional in Device Manager?

try to ping your NIC card
Solved the problem!! I was missing hardware. I didn't realize the desktop was different than the laptop. I just needed the external wireless adapter. I feel KINDA dumb, but I've never built a computer before.