Netscape 7.2 Mirgration

I am currently using Netscape 7.2 under Windows 98SE. Has anyone any experience migrating all of the files to a 32 bit Windows XP? I have over ten years worth of e-mails and posts from previous versions of Netscape as well as the current version that I very much wish to retain as is. In addition, I just tested the Win32 variant (a 32 bit program, of course) of V6.0 Ersatz-11 under a 64 bit Windows 7. It seemed to work very well running at about twice the speed of an older system which was running under Windows XP. Does anyone have any experience in a migration of Netscape 7.2 to a 64 bit Windows 7 system? If Netscape 7.2 and Ersatz-11 can work well using a 64 bit Windows 7 system, then I may skip all the in-between OSs from Microsoft and go directly to a 64 bit Windows 7. I know that there are many (and much better systems) than Microsoft, but at 74 years old, I don't feel like taking the time and effort to learn them well enough to set up. My son will set up a system for me and I can just do the migration. I would much rather stay with RT-11, but I don't believe that it can do a reasonable job with e-mail, if at all. PLUS, under that 64 bit Windows 7 system, RT-11 running under Ersatz-11 has a speed of about 150 times a PDP-11/93. Jerome Fine