NAnt is a tool that can help you build your .net applications. 

You can get really detailed with it, but what if you just want to set it up to quickly build projects/solutions or run automated builds.  This is especially useful if you are rebuilding 1 project that you are in the process of testing so you don’t have to wait for VS to figure out if any of the referenced projects need to be rebuilt.

Well, with a few quick steps you can have this.

After downloading NAnt you need to create a little batch file somewhere in your PATH (for example, c:windows).  Name the file nant.bat and put this in it:

@echo off
"C:appsnantnant-0.86-beta1binNAnt.exe" %*

You will obviously want to replace my path with your own path to your nant exe that you downloaded.

Then add an entry to your PATH system variable to the directory that contains devenv.com.  For me this path is:
C:Program FilesMicrosoft Visual Studio 8Common7ide

Then you just need to add a .build file to your project.  I name it the same as my project name but you can do whatever you want.

This build file should contain the following XML:

<?xml version="1.0"?>
<project name="ProjName" default="build" basedir=".">
  <target name="build">
    <exec failonerror="true" program="devenv.com" commandline="ProjName.vbproj /build Debug" />
  </target>
</project>

Rename ProjName as needed in this file as well.

Then all you need to do is navigate to the folder that contains the .build file from a command line and run:

nant

It will scan for the build file, and use devenv.com to build it.

You can also use this to build solutions, just change the .vbproj file to a .sln file.