Put your PC into a slick ATX case

Remove the side of your new case. If the enclosure has a removable motherboard tray (the PC-6070A does), detach it. We unfastened four thumbscrews and slid ours out.

First, screw the standoffs, or motherboard mounts, into holes in the tray (or, lacking one, the case itself). These hexagonal bits match holes in your motherboard. Use your fingers first, then tighten with pliers. Some cases accept multiple motherboard types; put standoffs only in the holes that match your motherboard.

Next, remove the covers from the appropriate drive bays for your optical and floppy drives. You may have to remove the front panel to do so. The covers will be held by clips or screws. (Ours popped out with gentle pressure.) Some cases also have metal plates that you must punch out before using the bay. Wiggle them until they break free.

Keep an eye on cable length: your cables may be too short to position drives farther apart than in your old case.