Yes, it is possible. Just use the win32 version of cdrtools. I have a
mirror here:

http://drew.intercarve.net/archives/cdrtools-win32

although these may be a bit old, I have used them successfully.

On Wed, 18 Dec 2002, Michael Robinson wrote:

>Port-Dreamcast,
>
>Is it possible to create the boot files using Windows XP Professional
>istead of Linux or Unix because I currently do not have a Linux/Unix system?
>
>Thanks,
>Michael
>
>

Regards,
Drew Vogel