I recently came back to P99 and had to reinstall everything. I found what I've used in the past still works, and that's here:
https://www.project1999.com/forums/s...ad.php?t=28335
It's a self contained executable that basically does the work for you in terms of modifying the login details for eqemu as well as some other nifty bells and whistles, obviously the full details are in the post linked to above.
The only thing I still had to do manually was overwrite the files in the P99 directory with the ones linked on the getting started page.