I have directx9 on my system (from Freelancer) and have not noticed any problems with BG2 singleplayer games. You might want to make a backup of your game just in case, but I don't think that your version of directX has any direct effect on BG2 besides allowing the graphics to draw properly. Someone else might want to chime in here about multiplayer, especially whether all of the copies of BG2 need to be running the same version of DirectX, or if that is not an issue.
__________________
"Many are my names in many countries. Mithrandir among the Elves, Tharkun to the Dwarves; Olorin I was in my youth in the West that is forgotten, in the South Incanus, in the North Gandalf; to the East I go not"
--The Two Towers
|