Well your regimen should change as your body progresses although the abducter/adducter machines shouldn't be used and weight training isn't done in terms of minutes like cardio. Ideally, you should be using free weights over machines.
My recommendation would be to pay for a personal trainer for at least one visit and tell them your goals of weight training and that you would like a plan which you could use on your own for at least a month. You could ask for a total body workout or look at a lower body/upper body workout.
A decent book to look at is Body for Life which has an upper body workout plan and a lower body workout plan. A highly recommended book would be the New Rules of Lifting for Women.
Also feel free to wander over to the weight/resistance training subforum:
http://www.3fatchicks.com/forum/forumdisplay.php?f=80
There are a lot of useful stickies and information there.