sax,
We can't just tell you how to use the command line and expect you to be an expert. You have to learn and experiment.
First of, open a new command line by running the cmd command in your Run Dialogue. Then navigate to were the executable that you downloaded is using the command "cd ..."
Like
Quote:
cd "Documents and Settings/you/Desktop/"
|
and then type the HDCD decoder executable name, like
hdcd.exe
or something like that. It should be pretty self explanatory from there.