[GRASSLIST:477] i.fft install help!

Hi,

I'm running GRASS 6.0 windows release. I want to install i.fft (because
when I try to run it I get "command not found").

Anybody got any ideas how I can install i.fft for this version of GRASS? If
I can avoid putting a LINUX partition on my drive and installing the LINUX
GRASS version, that would be great.

Thanks,

Garret.