First you add your wow.exe to the 27net program by clicking the "+" button. Since you are using unicom, you want to use a server that starts with "W". Personally, I would just use the very first server at the top that starts with "A". The program will pick the best server for you. Highlight your server choice by clicking on it, then click the globe icon (the very first one) to connect. To start wow using the VPN, you double click the WoW icon inside your 27net program. If it's not letting you connect, run in admin mode.