What is the best and smallest cpu case that will fit my standard psu, harddisk, video card and dvd rom?

Well since you weren't very specific on what your hardware is exactly I will link you all the mini atx and htpc cases I can, they will all be very small compared to normal cases but may not house your components if you're using a regular atx sized motherboard.





Mini ATX cases:





http://www.newegg.com/Product/ProductLis鈥?/a>





http://www.newegg.com/Product/ProductLis鈥?/a>





http://www.newegg.com/Product/ProductLis鈥?/a>





http://www.newegg.com/Product/ProductLis鈥?/a>





http://www.newegg.com/Product/ProductLis鈥?/a>








HTPC/Media center cases:





http://www.newegg.com/Product/ProductLis鈥?/a>