Keyboard shortcuts on XFCE 4.4

[pac-man]

I was wondering if there is a way to make some keystroke combinations behave like they do in windows. I'm especially used to these three:

Pressing win key to pop up the applications menu.
ctrl+alt+del to get the process manager.
win+M to show the desktop (minimize all windows).

My experience in linux would be easier if I could do that, anyone knows how can I do such thing? (if possible).

Thanks

[LostArt]

Try system preferences keyboard shortcuts

[pac-man]

Thanks, I did it so, but I can't enable the win-key.

I have read that this is because of some GTK issue, how can I see what version of GTK my system uses?