MD2 question

Hi there , i am developing a hobby fps engine . I am using .md2 files(for the moment) for players,bots etc. My question is -> The player''s .md2 file and weapon''s .md2 file are different. So how do i make sure the weapon is always at the correct positio with respect to the player (i.e on his hand). Is ther any method to know where the hand of the player is w.r.t his (0,0,0) Thanx a lot !!!! On course to my first FPS engine , zoooooom