MN-720 Router not sharing internet with wired computers

[beamar]

I just bought a Microsoft MN-720 wireless router. I setup the router right and everything works perfect on the wireless end. But for some reason my wired computers(anything pluged into the router with a Cat 5 wire) doesn't work. Well, It works for like 1 mintue then it seems to just fall on it's face. It won't start working again till I reset the router. Then it only works for like a minute again. But on my labtop(wireless), Everything seems to work great. I have SBC DSL. I'm using POPPPE to contect to it. So here is how me setup looks

INTERNET-----SBC Speedstream modem------Microsoft router---computer.

My labtop is using XP and I think every other computer on my wired network uses win 2k.

Does it have anything to do with my MAC address? IS the router defective??

I'm lost here, a little help plz!

Brian

 

[bcastner]

1. Make sure you are not plugged into the "Uplink" port on the back of the router;

2. Is your computer set to "Obtain an IP address automaticly" ?

Check all the addresses by right-clicking the network icon in the Task Tray, Status, Support. If you see 169.x.x.x types of addresses and the DNS entries are empty there is a problem with either your ethernet cable, your TCP/IP settings, your NIC drivers, your NIC or the router itself.

When the internet connection stops can you ping the router? Can you ping another workstation?

 

[beamar]

The modem is plugged into the uplink on the router. All other computers use the "Hub" part.

All computers use DCHP

I don't lose my network connection, just Interent drops. Remember, this is only the computers using the wire.

Everything setup wireless works fine.