Can only be done IF you have a fixed IP on the modem, that way you can set the network card on the laptop to not only work with the modem but also a secondary IP (the gateway and DNS is set to whatever the modem wants...
(i.e.:
PC = 192.168.0.1/255.255.255.0
Laptop=192.168.0.2/255.255.255.0 and VM FIXED IP, SUBNET, GATEWAY and DNS )
If you;re on a residential IP then you can;t do it because if you change the IP to whatever the modem is issuing it'll timeout and reissue the same IP to someone else on the UBR after 7 days
---------- Post added at 18:30 ---------- Previous post was at 18:25 ----------
Pity windows can't allocate a dynamic IP AND be told to use a secondary IP, instead you have to do it all manually