Hi,
That C-example does nothing for or with PBP, the C-compiler used in the example (which ever it is) has a built in library function to support a SD-card. There is no such function built into PBP. HOWEVER there is a SD-card example on (who would've thought) the examples page at MELABS (SDFS3.pbp).

With that said do you really need a SD-card? How much info do you need to store? The 4550 has 256bytes of EEPROM, can't you use that? Not that having a SD-card is "impossible" but using the EEPROM is going to be MUCH (I mean MUCH) easier than - which I think you'll see once you look at the example code.

/Henrik.