how do you setup a wireless routers security for a Mac computer?

okay I think I know how to do some of this. I have a linksys wireless N router so i would type in 192.168.1.1, the username would be admin. after that i am not sure what to do. i want to setup security for my computer. and i want to be able to hook up my ps3 through wireless internet.

Russia Wants Iran Cyber Attack Investigation – myfoxny.com

Iran’s envoy to the International Atomic Energy Agency said last week that the Stuxnet attack did not affect the country’s … in an apparent reference to the computer virus Stuxnet, but said they were resolved. The UN Security Council, of which Russia is …
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When allowing others to “take over” computer how to insure security?

I bought a new computer and numerous people tried to get it to allow Internet with my card. Eventually I got connected..after allowing a specialist to “take over” control of my computer. Now I wonder how to make sure security is not compromised. Any suggestions to calm my fears?

Protect Your Computer from Malware – Associated Content

Malware includes computer viruses, worms, trojan horses … nets” to engage in distributed denial-of-service attacks. Dialers are programs that use your modem, they can run up charges on 1-900 numbers. Spyware can track your web browsing and may include …
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