Doesn't your system have applications->internet->remote desktop viewer?
That's what I've always used. If it's not there, which would be odd,
just go to system->administration->synaptic package manager, search for
remote desktop viewer, and click on your choices to install.

I use tsclient since it's a native windoze thing, but if your
windozepeecee has vnc installed, you could also use tightvncviewer...