When installing nt4.0 from cd, after I put in the third installation floppy disk (created by the insatallation disk), the installation program won't recognize the disk.

Any input are very much appreciated.

my system: pentium 66mhz, award modular bios v.4.50g
24mb ram, 1.2 gb western digital ide hard disk + 200 mb ide hard disk, Media vision Pro3d MV5000 kit (using Premium/Pro 3d sound card, NCR 501 CDROM attached to the sound card), Diamond Stealth 64 VRAM PCI (driver v. 1.33