Can't speak for our DM, but I'm going to think like most PbP all rolls should be done in the forum using the dice rolling tools. The in-forum dice roller has been updated, refer to this post should you want further details:
Story - Gorrath was a slave in fighter pits. After several years of fighting and winning he was able to buy his freedom. Since being free has has traveled around looking for new challenges, including physical and intellectual. He even took up singing. I would like to play him as a wounded character giving him a limp that would reduce his walking speed from 30 to 25.