Gcc for AVR

Hi,
I'm a Linux user and gcc fan.
At work I,m programming AVR ATMEGA128 using icc-avr and then loading the
program to the board using MEGALOAD program.

I'd like to try using gcc to compile my program.
I have followed the instruction found in "AVR Libc Home Page" to compile my
program and I have compiled the HEX file.
Can i use this file whit windows and MEGALOAD?
where cai i find a good guide,tutorial/how-to to switch from windows build
system to a new linux based one?

thank you
.