There are tons of applications out there that do the same thing, view another computer and I have tested alot of them some have pros and cons but I have decided to stick with Single Click VNC because of how little it requires the user on the other end to do.

**Yes this supports clients of XP, Vista, and Win7 because of a trick I made for disabling Aero**

UltraVNC Single Click is a small, standalone server you can email, host it on your website, or simply place in your public drop box folder;  that can be run in – you guessed it – a single click. Here’s how to set up a Single Click VNC server that will let you remote control someone’s computer over the internet with no configuration on their part.

Warning: This tutorial requires some comfort with networking concepts and VNC. If you need some help along the way feel free to contact me and I can walk you through it and help you out.

• How SingleClick UltraVNC works

  In a normal VNC server/viewer setup, the viewer contacts the VNC server to log in and remote control it. With SingleClick Ultra VNC, the opposite happens: the server is pre-configured to contact a viewer at a specified IP address, as shown:

  

  The advantage here is that Grandpa (the person running the server) doesn’t have to worry about opening ports on his computer or firewall – since the server makes the call out, the connection can happen regardless. The obligation is on the viewer (you) to have an open port.

  Set up your mini, standalone VNC server

  Download this .zip file(1.10mb): http://lucaspc.com/myscripts/vnc.zip
  Extract the .zip file to your desktop.
  You will see a folder structure like this:
  
  Open the folder called “SC_VNC_Files” and you will see all these files.
  
  The only portion you will “need” to modify is the file called “helpdesk.txt” . This is where you input your Public IP Address or DYDNS name and the port# if you stray from the default.
  Here is our example helpdesk.txt file:
  Click image to enlarge:
  

  Your mini VNC server starts with a plain text file that contains its configuration.

  **Remove the [Direct] at the bottom if you want to add more than one host to allow the user to choose who he get’s connected to (be sure to use different port numbers if using same IP or DYDNS)

  **Note:  for a free Dynamic DNS service check out www.no-ip.com and create an account, setup yourself with a free dydns “domain” and use that instead of the IP Address.

  Once you modify the helpdesk.txt file to your liking you have the option of replacing the default logo.bmp with your own if you want but that is no necessary.

  Ok, now go back to the main folder see here:

  

  Double Click on “Compile.cmd” and it will make the necessary .exe file for you to distribute to your friends.

  

  Now let’s test that to make sure it works.

  (with the [DIRECT] option in the bottom of the helpdesk.txt file it will only show this window for a few seconds and then connect automatically.)

  Click image to enlarge:

  

  Now, before you email that bad boy to Grandpa, you’ve got to get your viewer ready and listening on port 5500  as you specified in helpdesk.txt. Download the full-on UltraVNC package and install it. From the Start menu, launch the Ultra VNC Viewer (Listen Mode) which will wait for any incoming connections, on a side note I added a shortcut from that to my startup folder so it’s always running when I start up my pc.

  If you are not receiving the connection be sure that your router is forwarding the correct port to your pc and that any firewall on your pc is allowing it.