To usmanaleem:
I did not mention it in the post, but I also tried with the /s at the end and the dialog box still popped up. In addition, I thought the /s would only stop the success pop-up box from appearing indicating whether the dll was registered successfully or not.
To agray1:
I tried with the version set to 10.0 as you mention, but the dialog box still appears.
Can either of you see the behavior of registering this dll without the dialog box appearing on your machines? Thanks for your assistance.