Zikula Community

I'm having a small problem with my site install here with the theme i have purchased. I have installed the PostNuke site, then installed the phpBB2 forum module, then tried to use the third party theme i purchased. However, the problem i'm having is that the theme will not match with the forums. Or i should say the forums wont take the third party theme. I know it works but i dont know how to fix the problem. My theme i'm using is W-Tungsten-O. The site is www.sinzclan.com

If anyone can help me figure out this minor glith and explain to me how this could be fixed i would greatly appreciate it. Thank you and have a great day.