Hi Sean Commonly people would use Data.Word and Data.Int to get sized integrals. There's no corresponding sized types for floats - if you're lucky your serialized C Structs won't use floats otherwise you'll have to dig out a reference manual to see how they are laid out. To actually read C-structs Data.Binary.Get should provide the primitives you need (getWord8, getWord16le, getWord16be, ...), you'll then have to assemble a parser using these primitives to read your struct. You might have to pay some attention to alignment - the C struct might be laid out with elements on byte boundaries (usually 4-byte) rather than directly adjacent. I suspect alignment is compiler dependent, its a long time since I looked at this but I believe C99 has pragmas to direct the compiler on alignment. Best wishes Stephen