It wont override your Direct X 10, or anything for that matter.
An update is necessary, all it does is add extensions.
I installed and it still doesn't work, do i have to restart comp?
give it a go
Just make sure you have dx selected in options
I did that, not wokring ><
whats the exact error? are u sure u hit config, plugins and for gfx change dolphin opengl to direct 3d 9 if u already did that, just post the error plz

Yes thats what I did.
Now it say : Sorry but it looks like your 3d accelarator is too old, or doesn't support feature that dolphin require
Falling back to software vertex processing
It should still work after that
Press enter one more time after that message