Why would you use 6 floppies when you can do the same thing using the Windows CD?
First step - if you have a cd burner is to slipstream SP2 (or SP1) into the original Windows XP. There are links in other posts here at OSNN to slipstreaming instructions. Basically you download the SP read the info off the original Windows CD and then combine the two and burn a new (legal) windows CD so you don't have to do a long boring SP update. The resulting CD is the same as a store bought copy with the latest SP on it.
Second step - back up all your data. Especially your music and other digital media rights. If you don't you loose them and can't get them back.
Third step - Reboot the PC and hit del (or whatever the key is to enter bios setup) and set you PC to boot from CD/DVD as first boot device. Then reset the rest of bios to default values. If you don't windows may not be able to install. Save and exit the bios setup.
Fourth step - restart with the windows cd in the drive. Windows will ask what you want to do (install, repair, etc.) Selecty install. It will ask where. Tell it C drive. A discussion will ensue about overwriting old windows etc. Tell it to format the C: drive (and don't forget you have to create partitions too or the drive will be unusable).
Fifth step - at some point during the format and reinstall it will ask to reboot. At this time change the Bios back to Boot from HD first, or at least remember to take the CD out. Otherwise you end up in an endless loop of install.
That's about it.
Now aquestion. Why do you want to reformat? There is no install that can't be saved. Reformat is the sign of a weak mind.
Backup - this gets messy. Windows stashes stuff all over the palace.
There is a windows backup wizard. I haven't used it. I'm blessed with multiple big hard drives.
Manually - to dvd or cd (preferably DVD) using Nero or Roxio.
-You will need to save your Browser & Mail - favorites, addresss books, etc.
-Save My documents in its's entirety.
-You should save the settings files for all your applications too. Unfortunately they are scattered across multiple directories.
-DON'T FORGET ALL YOUR MEDIA AND THE DIGITAL RIGHTS LISCENCE FILES!
-Make sure you have all your mail folders saved.
-Downloaded software must be saved if you paid for it. (Freebies can be downloaded again).
Yes, this is a **** load of hard work and lots of DVDs (or 10 times lots of CDs).
You can install a new MB corrrectly as long as the original system is functioning. There are other (recent) posts on how to do it. Basically:
-Power up the new MB on the desk with just RAM, CPU/HSF and Video before installing it to make sure it works before you do a lot of effort for nothing.
-Back up critical data.
-Set your video card to 800x600
-Open System Manager and uninstall all of the old MB drivers (PCI, DMA, Video, Sound, LAN, etc).
-Shut down, swap MB's.
-Boot, windows will find lot of new hardware (i.e the new MB). Install it.
PS Yes, I have actually done this. If the MB has the same chipset brand as the old MB you can skip some of this if you like to live dangerously. (I do.)