whos we?
anyway, there are many tuts on this. but heres basic info
Attachment Point Names:
overhead (floats over the unit's head, but doesn't sway with)
head (sways with the unit's animation)
chest (also good for wings)
origin (usually at the base of a unit's feet)
hand
foot
weapon (for heroes)
sprite (for buildings)
medium (for buildings)
large (for buildings)
Attachment Point Modifiers:
left
right
mount (for mounted units)
rear (for quadrupeds)
first (for buildings)
second (for buildings)
third (for buildings)
fourth (for buildings)
fifth (for buildings)
sixth (for buildings)
rallypoint (for buildings)
(so if you want it in his left hand, it would be, hand,left)
If you want triggered, use the special affect on any of the given points above.
If you want it on the unit, make a dummy ability, with the special effect attached to any of the given points above.