In win XP I would do it this way.
Open up the
nwm folder in your nwn install. on my computer the path is C:\\NeverwinterNights\\NWN\\nwm
Find the file named Chapter1.nwm and right click on it.
Select 'open with...'
Click the 'browse...' button
Select nwtoolset.exe from the nwn folder to open the file with. // after you have done this one time you will be able to open any nwm files by just double clicking them, al long as you made sure the 'always use selected program to open this type of file' check box was checked.
Once you have it opened in the toolset. Form the EDIT menu select 'Module Properties'
Select the 'Events' tab.
Down where it says OnPlayerRest type in a file name. Ill call it x0_onrest
click the EDIT button next to it.
Confirm that the script does not exsist and that you want to create a new on.
In the script editor Type in this script, Or just copy and past it from here.
void main()
{
if (GetLastRestEventType()==REST_EVENTTYPE_REST_FINISHED)
SetTime( GetTimeHour()+8,GetTimeMinute(),0,0);
}
Hit F7 to save and compile the script. Or clicking the save and compile button in the upper left corner will do the same thing you should get a message saying : 1/29/2012 3:13:16 PM: 0 Errors. 'x0_onrest' compiled successfully
Close the script editor.
Click "OK' on the modules properties tab.
Click the 'X' in the uper right corner of the toolset to close and confirm that you want to save the module.
At this point you are done.