how to interface SD/MMC card with ATmega128 microcontroller

hi..can anyone suggest me how to interface SD/MMC card with ATmega128 microcontroller

well think i need to work on this atmega128 so many querries on it....
@tilak Ajay wud be more specific...
neways for my experience on other uControllers..

interface used SPI
filesystem FAT8 minimum...

search KEIL for extended filesysytem codes EFSL and then interface your card with SPI interface...
u might need to add an rtos kernenl to your project too....

thanks for ur reply

I don't have any code for fat file system..
As far as i know.. AVRlib supports MMC and IDEs. try downloading it and take a look..
also check its documentation.

try the FatFS here, http://elm-chan.org/fsw/ff/00index_e.html
download the sample projects too, comes with schematic too I think. there's one for avr, I believe it should be easy to port to atmega128.