I wonder if the ISP would let you do that (just thinking out loud). Maybe I am not too clear as your objective (my brain is also getting older as well).
Windows 7 each computer has one wireless one wired NIC.
Router A is not mine and provides wireless access to the internet from each computer. This network is shared by others as well in the house. Uses 192.168.0.1 at the router and DHCP to serve up IP addresses.
Router B is mine and provides wired&wireless access for each of my computer to printers, computer harddrives and usb drive connected to the router. This router is set to 192.168.1.1 and DHCP to make it simpler setting up printers (some are older, read maybe even possible at all). Both computers are wired to this router, printers are wired or wireless as needed.
Problem: when the computers have the network wire plugged in, they cannot access the internet. (Names are not resolved to IP addresses and IP addresses are not reachable.) Unplug the wire and the internet works, but of course no network-harddrives or printers are available.
Wanted: to have access to harddrives/printers and to internet (but not letting everyone in the house -renters come and go- use my printers or have access to my harddrives.)
Tried: assigning static IP to the wired NIC. Result: wire plugged in, access to internet, but router B only an unrecognized network, NO access to printers or harddrives.
Tried: messing around. No way of knowing what I did or what results were. Decided to quit stabbing in the dark and search for help. No help found specific to this setup, but interesting info. So I'm asking.
It's got to be simple.
Level: Long ago in another life Windows NT 4 MCSE, a few years ago near dead sick, brain forgot a bunch, getting healthier working my way back. Don't know what I know, not know.