Never loaded mozilla before. Brought down the .zip file. After loading Netzip to open it, I was left with an empty directory below C:\Program Files\mozilla.org\ Mozilla\bin and no mozilla files anywhere ! Brought down the latest .exe file. Each time I ran the executable to install it I was unsuccessful. It consistently ended with an error about not being able to load a .dll file in a directory below C:\windows\temp\ns_temp\bin . Checking for the file in the directory path it gave in a MSDOS window before clicking OK on the error message I always found the file was there! But after clicking OK in the error message's window the installation ended and then a couple directories and their contents in the path of the file that the install couldn't load were all gone. So I gave up trying to load the 1.0 level. I loaded the March 2002 .9 level without any problems.
*** This bug has been marked as a duplicate of 135570 ***