TimerC interrupt

Hello!

I want to setup an interrupt on TimerC match. This is my code:

WrPortI(TCCR, &TCCRShadow, 0x0B);
WrPortI(TCCSR, &TCCSRShadow, 0x01);
WrPortI(TCDHR, NULL, 0x8F);
WrPortI(TCDLR, NULL, 0xFF);

The isr is defined here:

nodebug root void timerC_isr() {
// Do something
}

Reading the documentation I cannot find the interrupt vector number to pass to the following function:

SetVectIntern(???, timerC_isr);

Please, may you help me?

Thanks
Marco / iw2nzm