I suggest you try to download Mozilla Firefox or Opera, those are both internet brownsers. If you still cant get on with one fo them then try to download a runescape client. I suggest you download one from runehq.com because many of the webbs runescape clients are nothing but keyloggers.
If you still cant play runescape please post here again or pm me.
EDIT: the download link for mozilla firefox is:
http://www.mozilla.org/products/firefox/all.html
download link for opera is:
http://www.opera.com/download/
~Hello5000