Hi knittingnanna,
Amy has a page with different types of cast-ons here:
http://www.knittinghelp.com/knitting...ques/index.php
Do any of those help you? (There is an "Alternate Cable Cast-On" that is right down the bottom of the page and it looks like what you are asking about?)
I read somewhere that the "old norweigian cast-on" is good for k2-p2 ribs, and Amy has a video for this cast-on on as well...