Hi
I want to do bassically this ๐๐
Internet <------> WiFi modem <----wireless----> old WiFi modem <------> PC
I want it to be wireless but i don't even know if it is possible.
If your router is supported by a *WRT like DD-WRT you can use "Client Mode" or bridge mode and you can do what you want to do.
You only need the router connected to the computer to have *WRT.
Client Mode would create a separate LAN for the computer. Bridge Mode would bridge the LAN from the main router.