Getting IP adress problems and firewal is blocking parts of windows when i hook up router

Question

I have a Model WRT54G router, have had it for over a year with no problems, until about 3 months ago or so. I hooked up the router to our computers after moving them, and I began to have 2 problems. One, I started to get messages saying that there was an IP conflict with the other computer on the network. The second is that I kept getting a message through my firewall, that it was blocking part of Windows, nt and kernel. I thought it was just the way I had set the network up, but after a month of this, a relative of mine, that has the same router, started having the same problem. We were told that it was the modem for our internet service, which is cable. They had upgraded the service or some such thing, and thats what was causing the trouble. We went to the cable company, and they told us there is nothing wrong with the modems, that it was the router. If anybody can help, please do, I am posting this as a last resort before I go out and buy a new router. Thank you

Answer 1

Well as far as the first problem goes, what IP address are both PCs being assigned? I take it you're using DHCP on the router. Try this, bring up command prompt, type ipconfig /release, shut down the PC. Do the same thing to any other PCs you have on your LAN. Then boot up each PC one at a time, this will ensure each PC is assigned a different IP address. Once the PC has booted up note the IP address and move on to the next PC.
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