If you have an NT boot sector + ntldr + ntdetect, you could use these, and a utility i found, to multiboot several win9x systems.
If you don't have NT in any form (NT, XP, 2K, 2K3 &c - not VISTA, though) , then you could do this.
- get a hold of bootpart from <a href="http://www.winimage.com/" target="_blank">http://www.winimage.com/</a>
- get boot files ntldr, ntdetect.com
- get bootchooser from <a href="http://www.maddogsw.com/bootchooser/" target="_blank">http://www.maddogsw.com/bootchooser/</a>
You should be able to set up several win9x installs.