Frustrating problems with BGW210 modem and ASUS Router

Problem:  I need to use my own router as I need network USB printing.  The BGW210 has no provisions for this.

Description:  When I connect my ASUS router to the BGW210, for the most part, the router works fine.  Both the wired and wireless devices connect with expected speed.  

However, use of the router's features is limited.  To begin with, I cannot access the router's settings via http//192.168.1.1 , the browser just times out.  More importantly, I cannot carry out any network printing, just gets timed out.  If this is a clue, if I unplug the ASUS router, after it reboots I am able to get into router's settings when a message from the router pops up that the "settings have changed".  But once I log out of the router's home page, I cannot log back in.

After scouring posts for several hours, I have tried all of these with absolutely no success:

1) Turning on IP Passthrough, setting Passthrough Mode to "DHCPS-fixed" and then selecting the MAC address of the ASUS router.  I also turned off packet filtering.    

2) Trying "Cascaded Routers".  This kept rejecting the addresses I entered with error messages, even though I put in the Network Address and Subnet Mask of the ASUS router.

3) Also tried turning on "Public Subnet" as some posts recommend.

Any recommendations for a solution would be appreciated.