rom name is covered in this thread ...
http://forum.ppcgeeks.com/showthread.php?p=639044
I think that calkulin bakes some of his information into MSXIPKernel\boot_ms.rgu so you'd need to extract and then rebuild the xip to change it ... but, c'mon - is a little recognition too much to ask for using his work?
Best regards,
-boggsie