Its the same as for win 98.
Put in startup floppy and start computer.
When the floppy has finished going through its motions just type format c:
and then press enter.The system will tell you that all data will be erased do you want to continue? Answer is yes.
Restart the computer and when the floppy is finished you should get a screen with options to boot fron a: c: cdrom or boot into dos. obviously from here you select boot from cdrom
Hope this helps.