You should have a whatever.inf file on the floppy - don't bother finding
setup.exe. You can right click the .inf file and click Install in the
commands drop down menu; if you want to see what's in the .inf file, click
the Edit command in same menu list. Also, you can install the .inf via
Hardware Wizard.
Otherwise, if you did not install HDD yet:
Install the hard-drive (HDD), boot and open BIOS. You should find the new
SATA HDD installed - but might be presented as an IDE HDD - pending your
mobo and BIOS. Navigate BIOS and check if there is a SATA (controller)
enable option - theree might be none but the SATA Raid option which you
don't need. If you have to install the controller, you might need to reboot.
Pending your mobo setup, you might need to install HDD drivers in Windows
first... but very unlikely.
After HDD is 'seen' in BIOS' start XP. The Hardware Wizard might discover
the new HDD - unlikely, though, since the HDD is not formatted for XP; if
the Wizard finds it, just feed it the drivers from the floppy - find the
..inf file.
If Hardware Wizard does not start, go Control Panel/ Administrative
Tools/Computer Management/Disk Management and you should see your SATA HDD
there. Right click and check Properties or Format options. Use the same
format as for the other HDD(s) you have installed; NTSF is recommended at
least for safety reasons.
Michael