Trying to create a wifi adapter for pc using arduino

Projects General Guidance
1

I am trying yo create a wifi adapter fir pc that if we connect it to pc the computer uses it as wifi adapter not as a arduino board

2

I am not sure what you gain by this as an Arduino does not come with WiFi as standard, you would have to add a shield. If you are going to add a Wifi shield to an Arduino why not just get a WiFi adapter for the PC?