Anyone use the SmartShirt kit designer programme?

I am in the process of doing a set of this season's NCEL Kits and need some updated shirt templates. I think they're used on Football Manager or one of the similar games but I'm not sure if they can just be dropped in or of theres some complicated procedure to go through which is probabley beyond me. Any help would be much appreciated (I'm a computer thicky when it comes to this sort of thing btw). Ta