Where or how do you findout if your PC is wireless compatible?
If you have a wireless adapters, most PCs do not have them, it
means that your PC is wireless compatible. Even if you do not have
it. It's very easy to fix. You can for $30-50 a good G-card which
will allow you to connect to wireless networks (even to N-network,
if the the network was configured to work in compatible mode).