Yip, how to turn it on!
Regards, Hermie
We can't tell you, This XP Pro desktop system doesn't have wifi, so I can't turn it on. On my win7 netbook system that has wifi built in and enabled by default, so it sought out my router with wifi and I was able to connect to that. It also has bluetooth which was enabled by default, but I disabled that as I didn't want it paring with any other bluetooth device.
As you can see (I hope) if your system has wifi built into the motherboard, most likely it will be enabled by default, otherwise you would need to purchase a wifi dongle.
So we need to know what your systems is, make model, etc. as that should be able to be searched for the specifications (motherboard, etc.) to see if it even has wifi on the system.