Can't Connect Xp Laptops To Wifi With Mac Filtering On

I have a Linksys WRT120N and two XP laptops.I can connect them to my network when MAC filtering is disabled but as soon as I re-enable it, the network kicks them off.I've had the network set to broadcast enable and disabled and it doesn't matter. There is NO WPA2 etc security or password on the network.I've checked, double-checked and quadruple-checked the MAC addresses of both laptops (using "ipconfig /all") and they're both right. I entered them correctly and I've quadruple-checked that I've checked "PERMIT" instead of "PREVENT". The funny thing is that I also have a Samsung Galaxy SII and that connected right to the router even WITH MAC address filtering on. It was unbothered the entire time I was enabling and disabling things. It kept streaming web radio the entire time.

One of my laptops is set to use Windows to configure my wireless networks and one uses Intel ProSet/Wireless to manage connections.Neither one can connect when MAC filtering is on... but my phone connects just fine.where someone asks this question ends up in people arguing about why MAC filtering is worthless or perfectly valid or whatever and the anti-MAC filtering person telling the asker to get some "real" security and stop wasting their time.