I think you can have as many browers as you want I have 3
on my computer, although not Netscape (IE's largest
competitor)
I found this on Tech TV's site:
"Internet Explorer and Netscape Navigator both want your
browser business so badly that they do a bad thing-- they
take over for the other as the default browser each time
you install a new version. Worse still, they'll keep
asking you to switch, kind of like all those long-
distance phone companies that call you during dinner. The
default browser is the one that automatically opens when
you click an Internet address in a separate application,
such as email or a Word document, so chances are you'll
spend most of your time using the default.
Here's how you can choose one over the other:
To make IE your default browser and ditch Netscape,
launch Internet Explorer.
Under the Tools Menu, choose Internet Options.
Click the Programs tab.
At the bottom, check the box that says "Internet Explorer
should check to see if it's the default browser."
Quit IE.
Launch again and you'll see a message asking if you want
IE as your default browser.
Before you click YES, uncheck the box that says "Always
perform this check...".
It's a little trickier to make Netscape take control.
You have to actually go into the Netscape folder on your
hard drive and find the file "prefs.js".
Open Notepad and drag that file into it.
The top line should read "Netscape User Preferences". The
second says "Do Not Edit!", but we'll ignore that for
now. Look for a line that reads
user_pref("browser.wfe.ignore_def_check", true);
and change the TRUE to FALSE.
Now save the changes, quit Notepad and launch Netscape
Navigator.
Much like Internet Explorer, Navigator will not ask you
if you want it to be your default browser. BUT this time
you need to check the box before clicking YES.
Now Netscape is your default browser and won't keep
badgering you if you decide to change your mind and go
back to IE."
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