I am unable to install ChemDraw Std 4.5 because one of my disks is unrecognized or unformatted.
You can download ChemDraw Std 4.5 for Windows replacement disks from our ftp site.
Download disk1.exe to an empty folder on your hard drive. Double click on disk1.exe to expand the installer files. Place the expanded files on a floppy disk and use as your replacement disk 1. Do the same procedure for any other disks, if necessary.
Use your original ChemDraw Std 4.5 serial number and reg code during the installation.