Perform: Multi-table lookup?

Just wondering if anyone knows how to do a multi-table lookup with perform. What I want to do is have the user enter a node number then match the node number in a second table which also has and organization id number and look up the organization name in a third table using the organization id's in the second and third tables. Is this possible? -- gshep@eskimo => Greg Sheppard NoDoz on Fox Mud