Adapt phpbb style to WP and integrate with WP

I am a gamer, and I would like to recreate and professionalize our webtools to support our Clan better. For that reason we stepped away from some of the free clan websites and decided to go our own way. So I have managed to get the easy part done - the forum. While doing that I found a style for the forum that I really liked, and naturally, I would like to have the same style on my blog.
Is there any way without spending too much $$ to get this done?
The style is the PBTech phpbb3 style and can be found at
Thank you for your advise!