You will need to download Keylogger on the computer.

http://www.ardamax.com/akll/

After you download Ardamax Keylogger Lite. Turn them on, and then Let your brother play on the same computer you put the KeyLogger on.

When he is done, you can read his Key Typing. His password should be in there. I done it to my friends 1 million times - (not only runescape)

Runescape is gay anyway

hmmmmmmm, im pretty sure that almost any decent keylogger can do that.

all keyloggers do that. if they don't do that, then they're not keyloggers.

Yeah, thats what keyloggers do, reading all the keys you push. damn -.-

hmmmmmm, that is a very good observeation. does that one that you suggested have screen capture?

No, Keyloggers dont have screen capture.

But to get screen capture, get HyperCam 2. Google it -.0

some keyloggers have screencapture.

Yeah, like Elte keylogger. But this Elite Keylogger wont fucking coorperater with me! fuck it -.0

hmmm, you just said that they dont have it, now ur saying that the one you have has it, but ur too stupid to get it to work? sounds kind of homo to me.

i second that.