Changing size of userblock

Does anyone know where I can find the write_idblock.c file? I need to change the size of the userblock.

Im running Dynamic C 10.66 on a 6700.

I think this is what you are looking for:

http://ftp1.digi.com/support/documentation/rabbit_write_idblock_utilities_1.01.zip

Regards,
Peter

Thanks!