Setuid Question

Stupid Newbie questions alert... if these bother you, hit "delete" now.... last night I installed minicom. During the install I received a prompt suggesting that I may need to "setuid" something for some reason(maybe to let the program control the modem?) .... how do I do this? do I need to do this? what is the syntax?... before you yell at me, I looked at all my books etc.. for "setuid", but couldn't find anything. Steve