Stopping the actual sweating will be difficult...you sweat for a reason. But i have found these to be amazing...and they reduce odour completely.
<a class="postlink" href="http://www.pitrok.co.uk/pitrok-push-up-crystal-deodorant/" onclick="window.open(this.href);return false;">http://www.pitrok.co.uk/pitrok-push-up- ... deodorant/</a>
It helps if you shave or at least trim as much under arm hair as you can...but you just wash/shower as normal, then rub the crystal under your arm...i guess just like a roll on deodorant.
Sounds a bit strange, but they are genuinely brilliant. I use the push up one, and the last one i bought (for about £6), was over a year ago...thats how long they last.
if you like/want the smell of a deodorant...just use the body spray ones, instead of anti-persporant....they just clog up the pores of your skin
sheesh, check me out LOL