Edit your client and your database to your desired Ip. (assuming you know how to).
Type in your router IP address....(aka default gateway IP in the command prompt)
1. Go to Command Prompt, Start-->Search: type in command prompt
a. Look for Default Gateway............<your IP>
2. Type in that IP address in your internet browser.
3. Login to your modem/ router
a.) If you don't know your Login, then your basically screwed. Otherwise (ask your parents or your provider if possible!)
4. Add new connections and add port numbers according to what your server needs to open
5. Then, If I remember correctly (I might be wrong). RIGHT click your Internet Explorer (IE) and click on Internet options, then go to the last tab which should be "advanced".
6. Check the port numbers that you added and hit "apply" and then "ok"
7. Whalla you've port forwarded.