“Muling” is taking one item of importance to a level1 item holding character. The “mule” in this case is the Level1 Character meant specifically just to hold items.
In shadowmaster program there is no real way to “mule”, meaning opening 2 characters and moving items between the two. This is how I do it using the shadowmaster program. I either export an item I found to a bevy of items that were exported in an organized file system or simply copy an item, then open a new/mule character and then paste it to the mule character.
The first post of this big thread made by me also directs you to some links that can help you play single player DII better.
Links are there for Shadowmaster, Diabloii.net (where this link shows you the basics of playing on Single Player and muling techniques).
Online CLOSED REALM muling is a much easier task to accomplish. You can do this by playing in a game that is passworded for at least FIVE minutes. By having this minimum game requirement, the CLOSED REALM will remember the game for a short period of time, thus allowing you to re-enter the game to mule.
The best way to do this on a CLOSED REALM is play a lvl1 character, doing the Den of Evil quest and getting the Cold Plains waypoint. This can all be done in about 10minutes on average, quicker if you are doing this over and over. This will usually be a five minute affair and thus allowing you to create a game that is “muleable”. But before you drop any of your goodies, leave the game, and try to re-enter it… Remember the name, remember the password. If you do re-enter the game, then it is safe to mule in that game. However, I’m not giving a 100% guarantee that it’ll be perfectly safe. BattleNet is laggy sometimes, it has hiccups, screws you over and more. This technique i give is great, but don’t come knocking my door saying you lost all your items.
This whole thread is a great read for newbies and oldbies alike, so make sure you go back and see if any of your questions were answered previously. If not, feel free to ask the guru of DII, I mean, nerd of DII hehe.
And just like MDSN said, let’s all pray for that patch…