Dear sir/mdm, I wonder RealVNC can do this or not. Let said i hv a single DSL line connected to my 10 PCs network. Within the network, i just want to install 3 PCs for RealVNC. can realVNC recognise the difference PCs in the network?? if yes, is it using the port to make the difference?? how do i connect to the network PC1 or PC2 or PC3 when stayed mobile?? Thank you.