If you have a previous version of the NB Toolbox on your computer please follow these steps first:

1. Within Matlab remove the NB toolbox folders from the Matlab path.
-File -> Set Path
-Select the folders to remove (you need to remove all folders associated with the old NB Toolbox)
-Click on the 'Remove' button
-Press the 'Save' button
-Press the 'Close' button

2. Delete the folders with the old NB toolbox from your computer

If this is the first time installing the NB Toolbox or you have removed an old version of the toolbox as described above please follow these steps:

1. Extract the files from the zip file (make sure you maintain the folder structure within the zip file)
2. Copy the main NB toolbox folder and all of its contents into the ~\Matlab\toolbox folder
3. Within Matlab add the NB toolbox folders to the Matlab path.
-File -> Set Path
-Select the folder to add
-Press 'Add with Subfolders...'
-Press the 'Save' button
-Press the 'Close' button

4. At the Matlab command prompt type 'rehash toolbox'
5. You should now be ready to use the NB toolbox.