The fine, superfine, etc. setting is for JPEG (lossy) compression quality and impacts file size accordingly. As Don noted, I'd suggest going w/ either fine or superfine, if you want good quality prints (particularly enlargements) at some point.
Shoot in max resolution w/ fine or superfine quality setting. Then,
if you really must save space and such when you transfer to PC, do a quick run-through of the pics and bin the obviously bad ones while maybe choosing to downsize the ones that you obviously won't need to enlarge for print at some point. If you do that, you might also want to take care to note whether pics could become more worthy after a reasonable crop. Also, sometimes, you may even find that cropping down to just a small part of the pic could be useful though such a severe crop would obviously lack the resolution needed for a good large print.
BUT if archival storage space is not a real problem, then keep the pics in original highest quality sizes and only bin the obviously bad ones.
As for basic viewing and very rudimentary edits (for resizing to email and such) in Windoze,
if you're running XP, you should be able to just use the default Windoze viewer for browsing and then click on the little edit icon towards the right end of the bottom tool bar (between the save-as icon and the help icon) -- OR you can just right click -> Edit. That will bring up MS Paint for the editing although you can probably change that. Just make sure you don't overwrite the original file when you resave it.
_Man_