If you're from the UK, just follow these steps, but skip the proxy. For the rest of us you must use this proxy:
Then copy and paste this into the proxy's search box:
Then log into Stardoll, once the page has loaded log out and log back in, BUT don't use the proxy this time.
You will then see this:
Click on the one with the white bubbles, next to the Academy button. Then do the objectives that they tell you to do.
Once you do that, you will receive the 100 free starcoins for completing the task.