How to connect my pc to the Internet?

I have tried everything to connect my windows xp 2002 pc it doesn't work
Every time I try something it loads and then saids redial but then that doesn't work I have all the cables connect Please Help I need Wi-Fi on my pc (I do have a network setting thingy where my ipod my iPhone and my sisters laptop are connect to so I know I have Wi-Fi in my house)!

Did you install a wireless network card?

Did you try turning it off and back on again?
Just kidding. Unless you haven't.

It is possible that your router can't connect that many devices at once.
You can try resetting everything (turn the router/modem off, wait 10 seconds, turn them back on)
You may also try connecting the computer wirelessly with a USB wireless card.

Get a usb Wi-Fi card plug in to your computer

will feel better

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