If you install Windows XP on your laptop, it will probably help your framerates in COD4. But that game relies heavily on your graphics card though. So I am not sure. You will be happier with XP anyway. Regardless if it helps COD4 or not. You will probably be able to see \\fileserver!
Just backup your files to another drive, use the Windows XP install to wipe out the partitions and make a new one just for XP. You should be fine.
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