I assume then that you are talking about it not showing up in Sonar. I am somewhat at a loss as to why it is showing up as an output if it is a microphone. The following thread discusses some general setup issues for USB microphones.
http://forum.cakewalk.com/Guide-SONAR-usb-mic-Samson-C01u-or-C03u-mic-m1618556.aspx btw if you are looking for help it would be helpful if people reading your question did not have to guess about everything. Take enough time and effort to write a clear explanation of what exactly you are doing, the model name or number for any equipment you are using, and how everything is connected, what dialogue or setting window you are talking about etc. Getting useful help on a forum is a lot of work for the person asking the question.