Thanks very much!
That's a great help. Much unlike my graphics card that just arrived only to discover that its 10mm too big for the computer (the heatsink hits the cpu fan assembly - ARGH!)
(Go here for the pics of my computer case... http://i3.photobucket.com...s/y67/MicroHue/Computer/ )

(Go here for the pics of my computer case... http://i3.photobucket.com...s/y67/MicroHue/Computer/ )