XP OS and Netscape OT

[Jim Isbell]

This is off the topic of Classic Computers but in 10 years it will be on 
topic.  I just want to get some answers NOW so that maybe this computer 
will be around in 10 years.

I run XP and Netscape 7.2

I would like to make a backup on CD-RW once a month.  In the old days 
when storage space was precious there were programs that allowed you to 
backup ONLY the files on the computer that had been updated or added 
since the last backup.  I would like to do the same but haven't found 
the method. 
OR in the alternative, I would like to do a FULL backup to a second HD 
that WOULD BE BOOTABLE by just swapping the HD when the main drive 
craters, which seems to be the main failure I have, about once every two 
years.

Secondly I would like to know how the save on a floppy or CD all my 
Netscape email archives and address book  and Web Bookmarks and then how 
to merge them BACK into a new install of Netscape without erasing what 
is already there.  The last time my HD cratered I had saved the address 
book but nothing else but I could never get it back on to the new install.