Having just got through loading SUSE 10.3 and copying over my Win 98VM's created under VMware Workstation 5.0, I found that the DVD/CD would not be identified. The reason for this is 10.3 uses a different path to the CD than the one 10.0 used. Previously this was /dev/hdc but now is /dev/sr0.
To fix simply open the .vmx file in a editor and change the file name to reflect the different path.
Code:
ide0:0.present = "TRUE"
ide0:0.fileName = "Windows 98.vmdk"
ide0:0.writeThrough = "TRUE"
ide1:0.present = "TRUE"
ide1:0.fileName = "/dev/sr0"
ide1:0.deviceType = "cdrom-raw"