I have a ATCS840 case, and have used these - http://www.overclockers.co.uk/showproduct.php?prodid=CB-039-AK&groupid=701&catid=48&subcat=196 but the cases could be completely different inside.
but you can always get some later on, and then do a better job of the cable management.
but you can always get some later on, and then do a better job of the cable management.