If you could give me more information, I could possibly assist you more. I am using the software on a 64 bit system, and am having no problems... Do you have Directx 9.0c or newer installed, and fully up to date? Do you have a microphone hooked up before you run the application? Do you have .Net Framework 3.5 sp1 installed and fully up to date? If you need additional help, please feel free to email me at Admin@slysoft.biz