Can someone help me with setting up a workout routine?

I don't think I can help you as I don't have a gym membership, but I am interested in what responses you receive. I mostly bike ride on a trail near our home plus use cardio DVD's. Good luck!

How much time and how often will you go?

If you have time, take a 20 min walk during your lunches.

Do pilates or some other work out DVD at home when you can't get to the gym.

At the gym, I would mke sure to stretch and warm up before doing about 10-20 min of cardio and 20-40 min of weight before cooling down. To make sure you are losing body fat % and the weight lost is nothing but fat, make sure to do a whole body work out on the weights. Meaning, make sure to do upper and lower body weights.

Hope this helps.

I go to the gym 4 or 5 times a week, for 45 - 90 minutes at a time (generally around 60). I alternate between strength days and cardio days.

Strength day
Warmup:
Walk, jog, run, jump rope, whatever -- just get your body warm and your muscles loosened up.
Supersets (or tri-sets) consisting of the following (in whatever combo I feel like for the day), 3 sets of 6 - 10 reps of each (heavy enough so the last rep of each set is a struggle): Assisted pull-ups, assisted dips, squats/leg press, calf raises, leg extension, leg curl, bench press, shoulder press, bicep curl, tricep kickback, back extension, chest flies, lateral raise, push-ups, planks, crunches. (I don't necessarily do all of these on every strength day, but I do try to hit all of the major muscle groups at least once.)
Stretch

On cardio days, it just depends on my mood--I get a good mix of bike, elliptical, and treadmill throughout the month. I'm always toying with speed and resistence on all of them, otherwise I tend to get bored.

I want to do a good 1.5hrs of workout 4-5 days/week. When I was in high school I was either running or biking everyday running was usually between 3-5miles/day and biking was a good 10miles. I was also in a couple conditioning classes in high school so I was active. I unfortunately got married 5 years ago and gained a lot of weight. I am determined to lose this weight,and to do it the healthy right way. So I'm reaching out for help. Thank you.

Oh I can so related to the married and gained! I try to workout for 1.5hrs a day Monday-Friday and then do some type of informal exercise on Saturday anything from working in my yard to talking a bike ride. I just started today to break up my workouts. I am getting up and going to the gym at 6am to 7am and then doing P90X at home at night after my work, dinner and everything is done. I had to work up to this amount of time so don't stress about the time so much just start doing what you can and work up from there. You don't want to overwhelm yourself with a certain calorie burn or amount of time and quit. You can gradually add more time where it works for you. Best of luck to you!

hit the free weights!