All you would need is to have a microphone attached to your computer. You should have a microphone jack on the sound card on the back of your computer where the speakers plug in. Just look for the icon of a microphone. It will be a small jack just like the one used by the speakers.
There are software programs you can use to record your voice and edit it but you can also use the built in Windows voice recorder to do the same thing although it’s pretty basic. Just click on Start and search for voice recorder to open it. Then just press the record button and talk into the microphone and press stop when you are done. Then you can save the recording to your hard drive.
To get the recording on to CD you will need some sort of CD burning software such as Roxio that will convert the .wav files from Sound Recorder to CD audio format. Roxio Record Now should allow you to record and burn your audio voice files.
You can also check out Audacity for great free sound recording software.