gistfile1.txt

source = "contract test { function multiply(uint a) returns(uint d) { return a * 7; } }"
contract = eth.compile.solidity(source).test;

MyContract = eth.contract(contract.info.abiDefinition);
address = MyContract.new({from: web3.eth.coinbase, data: contract.code})	

console.log("contract created address="+address);

var Multiply7 = eth.contract(contract.info.abiDefinition);
console.log("Multiply7="+Multiply7);
var myMultiply7 = Multiply7.at(address);
console.log("myMultiply7="+myMultiply7);

console.log("calling myMultiply7.multiply.call(6, {from:web3.eth.coinbase}");

var fortytwo=myMultiply7.multiply.sendTransaction(6, { from: web3.eth.coinbase });

console.log("multiply7.multiply.call(6, {from:web3.eth.coinbase}) => "+fortytwo);