I just did an fresh installation of Win 7 on my Sony VGN-Sz43GN.
However, I can't find a correct display driver for the Nvidia GoForce 7400 (notebook).
I went to the NVIDIA web site and download the win 7 64-bit driver.
But it does not allow me to installation.
The release note on the NVIDIA web site said that for the Vaio VGN model should refer back to the vendor.