Sure, I'd be more than happy to help.
I can imagine one of two problems you can run into:
-1) "Cannot create file map whatever". This is remedied by going to C:/Program Files/PSOBB, and taking the "online" application and making a shortcut of it on your desktop. Run it from there and you should be fine.
-2) When you run it, when you go to the start game screen and press Enter, a prompt comes up telling you to update your loader. This is remedied by going to Control Panel and switching your Parental Control to your file off. Alternatively, you can Run As Administrator, if that helps.
If problems persist, by all means, drop a VM and I'll be only happy to help. I hope I have already :)