Good work out to get you started:
Week 1, 10mins walking on running machine to warm up, 10mins on rowing machine, 10mins on cycle, 10mins on X trainer, finish off with 10mins walking to warm down. Total 50mins workout.
Work well within yourself but note the calories burned on each machine, do this minimum three times a week.
Week 2, 3 and 4 increase the calories burned by working harder.
Week 5, 6, 7 and 8 warm up 5mins, increase row, bike and X trainer to 15mins, warm down 5mins.