Greetings Apollon!
I can do this for you.
Please contact me via Scriptlance.
http://www.scriptlance.com/
You will need to register, create a project and invite me to bid on it.
My profile is here:
https://www.scriptlance.com/cgi-bin/...ofile=chemtech
I've done alot of similar custom phpBB modifications and you can browse previous project reviews from clients here:
https://www.scriptlance.com/cgi-bin/...chemtech&all=1
I also have a tech support forum located here:
http://chemtech.chemlab.tv/
Feel free to send info in your natural language as I can translate it and compare the two summaries to clarify any misunderstandings.
Although- I believe I can implement a "Dice Roll Mod" without further explaination.
I look forward to hearing from you.
Kind Regards,
William J. Burns
Chemtech Consultation