thanks guys I found out how. If anybody else needs to know...
To create a boot diskette you must have access to the i386 directory located on your Windows NT CD or possibly your Hard disk drive.
Format the floppy diskette you wish to make a bootable Windows NT boot disk using the Windows NT machine.
Copy boot.ini, ntdetect.com and ntldr to the floppy diskette just formatted.
If you are using any SCSI devices which you need access to you will also need to load these drivers onto the diskette