code=Circuit height="550" width="740" archive="Circuit.jar" p1name="pause" p1value=20 p2name="startCircuit" p2value="555int.txt" p3name="startLabel" p3value="555 Internals" p4name="useFrame" p4value="false" />

Put circuits in the images/circuit/ folder, which currently i think you can only do with shell access....