Trying to add a value to REG_NONE in the Registry

Here's the command I am using:

reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer /v IconUnderline /t REG_NONE /d 3

When that command executes, the data it sets is 33 00 00 00.

HOWEVER, it needs to be 03 00 00 00!

How can I modify the command to get it to add 03 00 00 00 and NOT 33 00 00 00?

Thanks!