I've seen the standoffs in compusa of all places. If you have time in that you don't need it setup right away, try contacting Antec about the screw/mount spec's. I know that the SX1040BII case uses slightly different length standoffs than the P160 does (can't really swap them). If you picked the case up from a retail store, go back and tell them that it didn't come with a screw bag and that you need one. Make a stink about it since ALL retail cases (those not listed as either OEM or open box) should have all the screws you'd need to put the system together.