Internal Wireless Not Working?

[daver]

For the past few weeks it would work, then when it felt like it wouldn't. None of the settings changed, and when it does connect it will sometimes work, or sometimes go in and out. Or it will connect to the network but the internet won't work. My dads laptop connects without a problem so why would his work and mine not? So i ethernet my laptop directly to the router and it works fine. So I figure it's my wireless card. It's only a year and a half old but I guess things do go bad. So will I be alright getting a wireless card to put into my expansion slot? Any advice would be appreciated very much. Thanks!