Debugging D in windows

[moe via Digitalmars-d-debugger]

Hi,

I am trying to debug in windows. So far I am trying to use windbg 
like described here: http://dlang.org/windbg.html

However, in windbg when using "g _Dmain" I get an error message: 
"No Debuggee specified". Can anybody tell me what I am missing 
here? I could not find anything online and I can not find any 
option to specify a debugger.

If you know about better ways to debug in windows, please let me 
know.