OK start at any planet battle front(you HAVE to be in the clone wars for this to work). chose any trooper you would like. Now when a droidcayes shield goes up go in front of it and crouch(the droidcaye will NOT shoot you but other enemies will so be careful and also this does not work on human players so be VERY careful).Now wait until the shield goes down and then shoot it's computercips out!(this may not work 100% of the time.)