From DSL Wiki
Damn Small Linux comes with a very handy compact VNCViewer already installed, I tried using RealVNC and TightVNC and found that TightVNC works best with the version of VNCViewer that the DSL developers included. To use it right-click anywhere desktop, goto Apps->Net-> and VNCViewer.
Once the applet starts, it presents you with a whitebox, simply type in the IP of your VNC-Server, and press enter. There is a command line system included, and I prefer the command-line version, simply open up a terminal and type "sudo su", press enter, then once logged in as root, type "VNCVIEWER -shared -bgr233 "server ip". -Contributed to the Damn Small Linux Wiki by ka-nacho with help from JoeyTech23 on skype, his website is http://www.joeytech.webs.com-