You will need to update the main A Record for your domain by editing the DNS. Click here for a step by step how-to (for GoDaddy).
Your domain provider may be a little different, so if you have any issues please contact them if you require assistance.
Update your A record to point to the following IP address: 184.108.40.206
Make sure you do this for both the www and non-www records (if they are there)