It sounds to me that your simplest solution would be to just create shortcuts on your desktop to automatically run the game a connect to the servers you want to play.
So if you have three servers that you normally play. you would create three shortcuts, one for each server. That way you would just have to click on the shortcut for the server to jump straight into it.
I do not have windows8 but it should work in it. I will describe the way I create the shortcuts in XP.
Goto your Neverwinter nights directory and find the nwmain.exe file.
Right click on it and select Create Shortcut. It should create the shortcut in the same directory.
Move the shortcut to the desktop. Drag and drop should work.
Right-click the shortcut and select properties.
On the general tab rename the shortcut to reflect the server you want to connect to.
On the shortcut tab in the target field add the connection information to the end of the field.
the connection information consists of "+connect " followed by the IP and port.
Example from my old desk top.
The tatget field look like.
"C:\NeverwinterNights\NWN\nwmain.exe" +connect 70.185.174.129:5121
Hope that helps.