James, Kalle , thank you for your answers.
1- About confirmation mode :
I use it but sometimes when viewing a film , I've false positives (and if I put confidence mode higher when I say commandos It don't get it ) so to avoid that when I'm viewing a film have false positives , what I do is disable all the comandos except "pause video" , this way when I want to rewind or something first I said computer (my prefix) pause video , then when paused I active the rest of the command and so I can say rewind (or what I want) without problem) but sometimes I've false positives (no many but some) ,to avoid that the video stops what I do is ask for confirmation but the osd text bother in the middle of the screen , so if I could put a small small osd on the left corner (or turn on a led), then in case of false positive it will no disturb me , I just ask I don't confirm and after a time it'd dissapear.
2- About the led :
There is a cheap cheap way to do this , just open a old keyboard take the controler board, put some cables on the caps locks , scroll lock leds contacts and then a led on this cables and then with evenghost , just send turn scroll lock on ,and turn scroll lock off, for executed command I just turn on 20 times caps lock and this look like a blinking led. If you want i could make some pictures of the system.