I have two computers which I usually connect to with a Remote Desktop session (Win XP Pro and Windows Home Server). It seems that not everything can be done using RDP. Installing a driver for a HP all-in-one printer for example cannot be done successfully, the installation either gets stuck or the printer won't be recognized. Same for several other devices that I tried to remotely install drivers.
My question is: What is the difference between using a computer directly or through RDP? Which actions cannot be done through RDP?