The clue is whether you used the WAN or the LAN port on the second router. If you used the WAN port then what you noted should happen.
If you want it to be on your LAN, please google the following.
How to use a router as a WAP.
PS. Bob is optional in that search!
Ok lets try and get this straight...I have a belkin wireless modem router in my basement office, wired to my laptop and desktop pc, i also have a lan cable running upstairs to my bedroom connected to a tp link wireless router, which in turn is connected to my other pc. this is because i wanted to extend the wifi range of my internet (the floors are reinforced concrete and steel, so no signal can pass from office) trouble is i cannot acces any files on my office computers from my bedroom pc, and vice versa, as the network only shows up the closest router, ie bedroom on tp link wireless router, and office on belkin wireless modem router. what settings do i need to change so that all pcs can see each other, if i just plug the cable from the belkin router modem into my bedroom pc all is good, but then i lose my wifi capabilities. Please help as this is driving me around the bend.