Gfx Driver

Well I've decided to make another topic for this one.....
how do I know which driver is the program using?
the blitz3D commands lets me know how many Drivers there is; to get Those drivers name; and to set a driver;

but how do I know which one he's using? without previously setting one?

ohh, And Why does GFXDriverName$() doesn't work on the .EXE.... it seams to only works fine when I run it in Blitz3D

Please Help