I am running Windows XP Professional SP2 on a AMD ThunderBird 1400MHz CPU. When I run cdshw.com, I get the following error:

16 bit MS-DOS Subsystem
The NTVDM CPU has encountered an illegal instruction.
CS:9898 IP:4162 OP:65 63 69 66 69 Choose 'Close' to terminate the application.

I just downloaded the binary from the CDShell website.

Geez...First post and it's a complaint that something is broke.