nope devices loading is not supported. (at least not officially) But.... is there a way ?

First of all i am new here so if i ask something wrong plz have patient :). Itried dosbox 0.62 and i had no probs until now. For a programm i needed to use this command device=c:\drex_drv.sys I tried to put it at the autoexec section but then i get this msg device. illegal command at the promth i …