try this:
if your gym has an aerobics room, sneak in when the soccer mams aren't around and hijack one of the step boards. you know, the little thing they use to step up and down from, i know you've seen it. take it over to a smith machine and raise the bar up like you are going to do smith squats, enough that you can stand under it. use it to do standing calf raises with the weight squat style, on your back. put enough weight that you can do twenty reps, almost to failure. for me its 2 plates each side. take a slghtly less than shoulder width stance, but point your ANKLES in a bit. now do your raises. but instead of doing twenty reps, do 75. make sure you do full reps, all the way down, all the way up, good contraction at the top. do raises till you cant, then pause for about 5 seconds, and do more raises. do this till you hit 75 reps, resting ony enough to let some of the lactic acid building up in your calves dissapate. even if you have to do it 5 reps at a time, keep going till you hit 75. this will only take about 4 minutes, but its a damn tough four minutes. you wont believe the pump, and if you can still walk afterward, which i doubt, next time add more weight. wait till the next day and see how sore you are. when your calves are bulls, thank me.