I'm not 100% sure, but if it is similar to my Netgear Router, then you have to have a box that has a static IP, and is running syslogd. So, the router already has a static
IP, and you would need to have one of your PCs also have a static IP. Apparently you can find a couple of flavors of syslogd at
http://download.cnet.com. But you would need to check your router documents to determine what software is required to capture the log.
To set a static IP for your Windows box that will run the syslogd, you would right click on "My Computer", select Properties. Then right click on your Connection, and select properties. Select TCP/IP, and select properties. On the first tab, you would change the assignment button from use DHCP to manually assign an IP, and then assign the machine an IP within your subnet. Just for grins, you might just make it 1 number larger than your router (If your router is 192.168.0.1, then make the syslogd machine be 192.168.0.2). You will also need to make sure you have a valid entry in the Gateway tab, and probably in the DNS tab as well. My router provides DNS proxying services, so I set the gateway and DNS tabs to be my router (192.168.0.1).
Reboot, and after you install the syslogd software, you should be able to use the syslogd software to see what your router is doing.
A couple of things. Once you assign the static IP of 192.168.0.2 (or whatever), you need to point the router's log to that machine. AND, you will also want to make sure that that new address is no longer in the router's DHCP pool. (You wouldn't want the router to assign 192.168.0.2 to another machine on the net. That would kill your network).