tnx, in fact, Gb tnx.
I'm going to assume that Sys.Cmdr 7.05 "takes over" the MBR and likely remains hidden; thus making Fedora "guess wrong" such that I sets up its own boot without recognizing what or where XP resides. If so, the "Other" option would not make XP visible/available for boot.
Assuming the above, I will have to break out some of my Linux books and as a Newbie:
1. Get to "From a FC terminal"? Means get from Graphics to Command mode after using the 1st FC5 CD to run FC.?
2. (as root)? Means key in proper commands to identify myself as authorized(PW) and wanting to go to the root level?
3. enter
fdisk -l (syntax = - ell)
cat /boot/grub/menu.lst (syntax = .ell-no space-st)
4. "post the output"? Sorry,

does this mean < ENTER>, or what?
5. Are you implying that:
a. I uninstall SC first so that it doesn't screw up the GRUB?
b. The above procedure will permit GRUB to override/ correct for proper boot while also allowing it to auto-I.D. XP and add it to the menu boot options? So SC stays installed but GRUB takes over OS selection?
I'm taking an online HP Learning Center Linux 101 course to get me a bit away from total ignorance but the instructor says dual boot is not covered; only assumes not using SC, and, except for one ref. I'm following, not going into detail.
Thanks for your patience.
Steve
(p.s. I believe I'm going to try also installing FC5 on a laptop with too little mem for graphics but enough for "command mode", thus forcing me to dig up a huge tome of encyclopedia size packed away in my basement to try to get a handle on the commands that really allow one to learn and control Linux.)