How do i apply a matrix to a vector2?

pack the vector2 into a vector4 with {2dVectpor.x,2dVector.y,0.0F,0.0F,1.0F}, apply the matrix, then take the X and Y back out of the 4d vector into the 2d vector.

Thanks chief, i tried to delete my thread because i thought i was hounding the forums too much lol. But that's interesting what you say, and might really help me out, thanks for replying.