Use Photoshop, for every graphic detail, like kits and adboards. I´ve never done it for myself though. There are some templates for it I guess, maybe on lomungtung´s ftp, although he has deleted many files from there in the last time. If you can´t find any templates just take the adboards from the game and paste your stuff on it with Photoshop. Maybe a more experienced user in graphics has a more precise answer.