How to Set up Wifi at Home

[_Cathy_]

We used to have 2 DSL lines at home (PLDT and Globe). I use the PLDT line exclusively for my computer (LAN). The Globe DSL line is used for WIFI. The Globe DSL was been cut already and I was left with the router that they provided before. I still want to use WIFI at home and I am wondering if I could use the Globe provided router or is that locked for Globe only (?) If not, can someone please teach me how to set it up?

I still want to be able to use my LAN for my computer at the same time have wifi. Please see the unit below (zyxel - pldt, blue - globe)

Thanks in Advance!