AVR-Chat

HI,
I have a question:
when I sent a Long(4 bytes) variable from the PC to the AVR which 
byte is first? LSB ? MSB ?
and if a need to sent a Long from the AVR to the PC USART (with a 
Borland Delphi program) what byte is needed to be first? LSB ? MSB?

also I´m using WINAVR GCC, my LCD rutine is with printf, how can I 
set the GCC to use LCD & USART simutaneusly with printf/fdevopen ?