AVR-Chat

Hello,

I have been using ARM, PIC, X86 for a long time and now we need to do 
a project using AVRs.

Any ideas on where/how to start up with some (low cost) IDE for 
windows that uses GCC fro AVR? We need to program in 'C'

I think olimex boards and jtag are the way to go for hardware, correct?

Thanks,

Gus