In-Application Programming of 89C51RD+

In the following code fragment,

QDATA code NtscROM[CSR_ROM_SIZE] =
{
// Philips configuration ROM for NTSC
0x0404E525, // Bus Info Length, CRC length, CRC
0x31333934, // "1394"
0xE0644000, // node capabilities
0x00603700, // node_vendor_id:0x006037 Philips Semiconductors, chip_id_hi
0x4E545343, // chip_id_low

I need my running application to over-write some of the entries
in the compiled-in "ROM" table. Philips has some assembly samples
(See Philips Application Note AN461) but I don't know how to fit
this together with my 'C' code. Anybody know how to do this?

Thanks,
jmh