| Welcome to the boards!
I too played volleyball in school . . and loved it! It's so great when you find a way to burn calories and it dosnt feel like "work"- that you actually enjoy it.
I'm not a huge fan of exercise myself, but know how important it is to get/stay healthy. I have joined a gym 2-3 times, but its so hard to dedicate the time with my schedule. Currently I workout at home in the mornings before I go to work. For myself, I find that getting up and on the ski machine is harder than the workout itself. BUt I have also found, that once you make it a habit its a lot easier and your body begins to miss it if you don't do it regularly.
My suggestions would be to start off slow. Promise yourself to go for a 20 min walk 3x a week and build on. You could also set a goal for yourself that after you lose "x" amount of pounds, you could volleyball again. There should be some local rec centers where you could join.
Good luck on your journey!
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