Additional lamps should have been included in the 4.03 release. The new data base has 1148 lamps, 210 of which have lamp photometry. You can download the new database (in zipped form).
The new lamp database files should go in sub-directory DB under your WORLDLYT directory (usually C:\WORLDLYT\DB). Have your browser put the zipped file in that directory, then go to DOS or a DOS shell, change directory to C:\WORLDLYT\DB, and unzip the files using PKUNZIP or Info-Zip's freeware UNZIP.
C:\WORLDLYT\DB> unzip lamp_404
- or -
C:\WORLDLYT\DB> pkunzip lamp_404
Two files, LAMP and LAMP.IND, with date 10 Feb 97 and time 4:04, should then be in the DB subdirectory.
Download Lamp Database (4.04) 43K
Download PKZIP 2.04g for DOS from PKWARE, Inc. (203k)