Is there a way to find out a wireless internet network password from a computer that is already connected to it?

It’s stored somewhere in the routine that connects you automatically. I don’t know how it works on a Mac, but in Win7 it’s in the Network Connection properties, although it may be masked out.

the computer i’m currently using is a PC….i have windows xp. i’ll check network connections…thank you much

Maybe you can look at the router. Go to 192.168.1.1 in a browser and enter the default username and password for your router (often that would be “admin” and “password”, but you can Google for your brand’s default.)

I want to say no. But, there is always a way. Re-set it, since you have access to the router.

Routers provided by the phone/cable company often have the wireless key on a sticker on the router.

Otherwise…

1)
Download the setup manual from the mfgs web site
2)
Restore the router to factory settings.
Usually there is a tiny button you have to push with a ball-point pen or paper clip. Hold it down for 10 seconds.
2)
Create a new 26-character wireless key and all the other settings.

http://www.nirsoft.net/utils/wireless_key.html