You *ought* to be able to boot the XP CD - this implies setting the
machine's BIOS to boot a CD before the hard disk. If you can achieve
that, then you can do a repair installation - you should start by
editing the boot.ini hidden file so that the lines in it refer to the
old windows folder, not your new one.
Set the BIOS to boot CD before Hard disk, then boot the XP CD, start
Setup (do not take 'Repair' at this stage), then after the license
agreement take 'Repair Installation'. Select your original XP as the
one to repair. This will retain your existing software installations and
most settings. But Updates will have to be run again, especially SP1;
and if you have drivers that only arrived with that, like USB 2 ones,
you will need to update drivers for the devices concerned. You may find
that things like virtual memory settings and some aspects of appearance
have reverted to defaults.
Having got it up in some form you can assess whether it is good enough
to use (in which case delete the windows1) or else use Files and
settings transfer to backup the needed material from it, change the
boot.ini back to windows1 and then reboot to install the material into
that. May not work completely, but should make a good start. See Gary
Woodruff's article at
www.aumha.org/a/fast.htm
--
Alex Nichol MS MVP (Windows - File Systems)
Bournemouth, U.K.
Alexn@mvps.org