How can I save my mix as one continuous mix but with CD track positions to burn on a CD?

You'll need to make sure that you create CD Markers at the positions that you want a new CD track to start. Right click on the timeline and select "Create Marker". Position it to your liking. Once you've added the markers, click "Save As A..." followed by clicking "Wave" file. Supply a name to save with. On the next screen, make sure that you have a sampling rate of 44,100 Hz, 16 bits and the stereo check box set. Make sure that the "Create a separate wav file for each CD track marker..." is set. Once it finishes saving, import the wav files into your CD burning software. Make sure to burn the disc in Disc-At-Once (DAO) and "Close the Session." Phew! :)

If you don't have a good burning program, check out Acoustica MP3 CD Burner

Also, you'll want a great CD labeler, try Acoustica CD/DVD Label Maker!

If you want to burn directly to Audio CD, try Mixcraft