If you want to log in with two accounts to do a trade or something, but RuneScape won't let you, this is a way around it.

Important note: you must be using internet explorer for this to work.

Step 1: Go on www.runescape.com .

Step 2: Click "Free Users Click here to Play" or "Members Click here to Play".

Step 3: Type in your username and password, but DO NOT CLICK "LOG IN".

Step 4: Make a new window/tab and go on www.runescape.com .

Step 5: Hover your mouse over the "Play Now" button and click "Java Options".

Step 6: Change the "Default Java (recommended)" option to "Force Sun Java (Internet Explorer only)". Click "Save Settings".

Step 7: Click "Free Users Click here to Play" or "Members Click here to Play".

Step 8: Type in your username and password of the other account DO NOT LOG IN.

Step 9: Click "Log in" on one of your accounts. And switch to the other window/tab and click "Log in". (You only need to click log in because you already typed up the username and password of both accounts.) You need to do this quickly.

TAA DAA!

Two accounts logged in at the same time!