I have just started going to the gym. I used to go, ages ago, but have not really done any exercise over the last 6 months.

Firstly, what is a reasonable amount of calories to burn in my session. I was there tonight, and burned over 200 calories in an hour - is this a pathetic attempt? I know I will get fitter, but I was trying to pace myself a bit so's not to overdo it.

Secondly, I enjoy using the cross-trainer, exercise bike, and treadmill. I don't particularly enjoy running, so is it okay to use the treadmill for a brisk walk/incline?

Most of the machines I like to use work the bottom half of my body. Would it be sufficient if I used the gym to work the lower half of my body, and carried out exercises at home for the top half - e.g. bingo wings/ love handles & stomach? I think this is a routine that I could get into the swing of.

Thoughts, please.