Rather than renaming netscape-v304-export.x86-unknown-linux-elf.tar so that you can use the .deb installer for the netscape 3 version, it's fairly simple to hack the 3 netscape related install files in /var/lib/dpkg/info. Simply search for all instances of 301 and change it to 304, then do the same with the Packages.contrib file. (As always, keep an original copy of the file you're about to edit in case something goes wrong).
I did exactly this and got a clean install of netscape-v304 with no complaints from dpkg. -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .