The Hackersquest item structure has the offsets for bane damage and other stuff for 0.3.4. There's a version of it in my item editor source (in NewItemStruct.h) which you can get from
http://www.geocities.com/Kaiyodouk
I'm pretty certain that the 'flag' value in the EQEmu Item struct is wrong, it should be part of the 'idfile' along with the array of unknowns after it so I'm not surprised it's coming up as zero most of the time.
K.