John is right on with his comments. Before you resort to other means for altering the volume in Cakewalk, use the Vol settings in Track View (127 is the maximum setting) together with the faders in the Master Output Section in Console View.
What you need to understand is that the faders in the Master Output section of the Console control the volume level of your "final mix" (regardless of whether your mixdown is being bounced to a new track, or exported to a wave or mp3 file). These are not there just to adjust listening levels, they also control the volume level of the new track or file you create during mixdown.
I typically use the Vol settings in Track View to get a good balance among all the tracks. I start with all the tracks set around 75, and then raise or lower the number of an individual track depending on whether I want to hear more or less of what the track contains. Once you have established the overall balance, play back all the tracks while monitoring the audio meters in the Master Output Section in Console View. Tweak the master faders up or down as required to get a good volume setting while making sure you're not clipping. Once you have this set, begin your mixdown.