I never had Netscape 6.2 installed but this is what I've been able to gather. People who've have NS6 installed please correct me if I've missed something:
The things you want to safeguard like your bookmarks, address book, and mail are stored in your profile's salted folder (.SLT) and will be unaffected by uninstalling Netscape 6 but you probably should copy the contents of the .SLT folder (or at least a copy of the bookmarks.html, abook.mab and your MAIL folders) and save those to a backup location. The install of Netscape 7 should not touch the profile folders but it doesn't hurt to have backups.
I'm not sure if this applies to all versions of Netscape 6 but there is an uninstall bug that leaves image files still linked to netscp6 UNLESS you first UNcheck the preferences that make Netscape 6 the default. See
http://bugzilla.mozilla.org/show_bug.cgi?id=64727 and
http://home.att.net/~cherokee67/ns6newjpegpatch.html
I would suggest you do the following (copied from the newsgroups) before installing Netscape 7, whether or not you decide to uninstall Netscape 6.2:
>
> 1) Open a Netscape 6 window.
> 2) Click on the Edit menu and select "Preferences"
> 3) In the Preferences screen, click on the triangle next to "Advanced" to
> display the Advanced subcatergories.
> 4) Click on "Desktop Integration"
> 5) In the Desktop Integration screen, clear the checkboxes of each file type
> that you do not wish to use Netscape 6 to view or that your wish to
> restore to its previous state.
> 6) Click on the OK button
I would then uninstall Netscape 6 using the Control Panel Add/Remove Programs, reboot, remove any leftover Netscape 6 folder under Program Files\Netscape (save your Plugins folder if you wish) then install Netscape 7 and create a brand new profile for use with Netscape 7. You can remove the old Netscape 6 profile (using the Profile Manager) once you have made copies of the .SLT folder contents you want to save such as the bookmarks (bookmarks.html) address book (abook.mab) and MAIL files (INBOX SENT DRAFTS and TEMPLATES). These can then be copied directly to the new profile, replacing the existing files in the new profile's .SLT folder and MAIL subfolder (details on Ramona's pages). You can also copy any Plugins from the saved to the new Netscape\Netscape\Plugins folder.
Here are Netscape's official instructions, from
http://channels.netscape.com/ns/browser ... ctions.pdf
Installation Instructions for Netscape 7.0 (should also apply to 7.1) from which I've copied the following:
============copy/paste==============
Uninstalling earlier versions
If you’ve installed an earlier Netscape 6 version, you may want to
uninstall the older software before installing Netscape 7.0.
Usually this is unnecessary, but it can prevent any problems
with previous versions from being inherited.
You don’t need to uninstall any version of Netscape earlier than 6.0
or any version of Internet Explorer, and you shouldn’t do so before
installation. If you do, Netscape 7.0 won’t be able to import any
data from them.
Once installation is complete, however, you can delete the other
programs to save space if you choose to.
(snip)
Uninstalling from a Windows computer
1. From the Start menu, point to Settings and then click Control Panel.
2. Double-click Add/Remove Programs in the Control Panel.
3. Click the Install/Uninstall tab in the dialog box that appears.
4. Select Netscape 6, click Add/Remove, and then click OK.
================end c/p=====================
Also you could search this board for terms like NS6 "Netscape 6" or NETSCP6 for previous discussions, for example:
http://sillydog.org/forum/viewtopic.php?t=2972
http://sillydog.org/forum/viewtopic.php?t=209
http://sillydog.org/forum/viewtopic.php?t=3970UserAgent: Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.6) Gecko/20040113