Instruction Set Simulator

I've tried my first 'Hello World' C/C++ software example with NIOS Eclipse IDE. I built the project and then as I don't have access to any hardware yet, I thought I could see the results by using Run as -> NIOS II Instruction Set Simulator to display on the console window as suggested by the tutorial. But I can't find this ISS! Instead I'm being directed to Lauterbach website to download their ISS (which I did) but then I am not too sure how to use it.

My question is: Can I do any C/C++ programming and test the results without having access to a development board yet?