Running iOs helloworld on the simulator

Hi, I have xcode 3.2.5 and the iOs 4.2 sdk, however I don’t have a developer account yet. Is there anyway I can get it to run on the simulator without code signing?

I get this error now: Code Sign error: The identity ‘iPhone Developer’ doesn’t match any valid certificate/private key pair in the default keychain

I met the same problem. That’s easy to fix.
Click the left-top corner of XCode, “4.2 | Debug | HelloWorld | HelloWorld | armv6”, click it then select “simulator” instead. It will show “Simulator - 4.2 | Debug | HelloWorld | …”
You can debug on the simulator even you have no developer account.

Thank you!