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D3DXMatrixLookAtLH ?!?

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Ok, I render a simple triangle on the screen. all fine and dandy. However, I want to be able to move the camera in tradition doom fashion (forward, backward, strafe left, strafe right, turn using mouse etc...) and I attempted using D3DXMatrixLookAtLH (...). So, I adjust the eyepoint, and lookat vectors whenever I get keyboard messages. However, it only works w/ 2 planes (y and z). Anytype of negative x movement (setting x below zero) doesnt move the camera to the left. So, I am kinda confused. Anyhelp would be appreciated. Here is some C/P: creating view matrix: D3DXMatrixLookAtLH( &matView, &eyepoint, &lookat, &D3DXVECTOR3( 0.0f, 1.0f, 0.0f ) ); changing vectors when w/ keyboard WM: case WM_LBUTTONDOWN: eyepoint.z -= 1; break; case WM_RBUTTONDOWN: eyepoint.x += 1; lookat.x += 1; case WM_MBUTTONDOWN: eyepoint.x -= .9; lookat.x -= .9;

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