I have one of these cases:
http://www.kustompcs.co.uk/acatalog/info_1276.html
with a heatpipe kit for the graphics card and one for the CPU
http://www.kustompcs.co.uk/acatalog/info_1304.html
(the one of the graphics card is basically the same, just not as tall)
they are very soft and you can bend them into shape very easily by hand (although they are easy to get kinks in too).
I have a spare that i want to use on the chipset. The question is, can these heat pipes be cut? they are far too long to fit in where i want them right now.
thanks