This is my first post so be gentle, I really like the cargo version the only thing is that I can not get the cargo door's to open, have tried all the key's that open door's on other product's so to all the good people out there, I could use some heip, Regards

you need to have electrical power to open them, a quick tip is to just start the APU, and when you see APU RUNNING in the EICAS then use the commands to open the cargo doors

Are there any special key command's

On the PMDG menu, there is a Key Assignments tab. You need to set up all the key combinations for the doors here. The default FS9 ones will not work. Hope that this works for you as the cargo door and loaders are cool :-)Fred Bray