virtualbox.org

I know this might sound like a dumb question, but how can I only use one application from a Virtual Machine and not see the entire OS ?

Is that something related to the ''Remote Display'' Option.

I don't find clear answer in the documentation.

The term is "Seamless Mode"

You should find details of how to do it in the User Manuals or through Google.

Haaaaaa.... With the real term, I will find the right information's.

Thank you Verry much...

Seamless mode still requires you to run the entire OS in the background, and has the same title bars and stuff overlayed on top of the current OS.

A better solution might be a headless virtual machine with an NX server running on it, and you can use NX to run a single command and get a floating window from it. Then you could have a shortcut that launches a specific app, keeps it in its own window, etc. Xming might work for this, too?

It doesn't include the right window decorations or anything, though.