How can I record the screen and the sound that the video without using microphone or something?

the best program in the world is "adobe captivate 5" it's awesome & professional recording Sound and Video at the same time from you PC screen with out any bugs or any thing... hope helps

The screen capture program I use is called Camtasia Studio, and it lets you record video along with audio from any source on your PC. It is not freeware or shareware, but they do offer a fully functional 30-day free trial: http://www.techsmith.com/download/camtasiatrial.asp If you only need such a tool for a one-time use, download the demo. When you get ready to capture the video, just make sure that the Audio option is set to record System Audio -- that's whatever you hear on your speakers or earphones. It will also let you record from a webcam mic, a separate mic or any other inputs on your computer, but you'll want to record System Audio. It's a great program but you have to pay for it if you want it to work for more than the 30 day trial. Hope this help, and good luck!