The 1.13 patch for Diablo II is now live! With this patch we have included a number of changes including a new respec system, allowing you to reset your character's stats and skills. To update to 1.13 simply connect to Battle.net, or to download and install manually visit our Diablo II Patch page: http://www.blizzard.com/support/
With the release of 1.13 the Diablo II ladder has been reset and all previous ladder characters are now normal non-ladder characters. To participate in the new ladder you'll need to create a new character and ensure the "Ladder Character" option is checked. For more information on ladder characters visit the Arreat Summit Realm Character Types page: http://classic.battle.net/diablo2exp/basics/charactertypes.shtml
http://forums.battle.net/thread.html?topicId=23766804248&sid=3000