VL Light is not aimed at beginners. If your computer is Pentium 4 or higher, you would be better off with KDE-Classic. Konqueror (like Nautilus in Ubuntu) makes networking much easier.
That said, it is correct that your password is not echoed back to you. You can use a blank one (by the way, running as root is discouraged unless you need to make system changes).
Samba is working if it sees \\vector. I assume it is the local machine. Before you can mount anything, you need to share some files on it.
As to why it doesn't see other machines, that becomes more complicated to figure out. It would help with a description of how your network is configured and what machines are connected to it.