Logic Express 6, multitrack recording Options

[deltanein]

I'm not sure why but I cannot make new audio tracks independent of the original four. For example if I load a new project the default song comes up. The default song has 4 audio tracks on which you can record. If I select "new audio track" a new track appears but when I record, both the new track and the old track (track4) record! I've put this software down a number of times out of frustration. If anyone knows what the problem is please let me know.

Thanks