Hacking DS Lite replacement screws?

[camintmier]

While replacing my DS Lite's case, I ended up dropping a screw (actually 3 of them..) I looked and looked, but I swear they were sucked into a black hole or something. Even looked with an old hard drive magnet. Maybe they went to the place that lost socks go in the clothes drier. Does anyone know a reputable place I could buy a set of replacement screws? Or maybe the sizes and thread pitch for the screws so I can try to hunt them down at my local hardware store?

Any help is appreciated.