I just got notified of your post (I use boardtracker to alert me when someone asks about NBBS )
To install it, simply copy install.php and install.data to where you want to install, then using your browser go to that place/install.php
If your host uses phpsuexec, you may have to do it the old way: unpack the .data file locally using Winzip (on PC), then upload the whole directory structure.
I did it the old fashion way... as it was only way i could get it to work.
Anyways i have been trying to firgure out how it works... i keep having issuses heres what i get after installing the script.
"SQL Layer Error: Table 'webmast_site.bb_ad_system' doesn't exist
Query [SELECT * FROM bb_ad_system WHERE enabled = '1' AND page='main' AND level='' ORDER BY RAND() LIMIT 1 ]"
Oh I see you're using the nightly build.
This was fixed a few days ago; if you download the current nightly build, references to this table are gone.
Sorry for the inconvenience.