How to record sound from laptop speakers

I would like to burn an audio cd from some video clips on the net. I
googled and found that I just need to set my 'Sound Recorder' to record
line-in and it will get the audio from the sound card. However this is
not working. My laptop is a new ( 2006 ) Dell Inspiron B130. Is it
possible my new computer's sound card wont let me do what I want?