helicopter add-on software

i came across some add-on software for fs2002 that i never knew existed. seems this is available overseas...BUT is it compatible with the US version of FS2002? it's called "Helicopter Operations" and available at
http://www.nakshop.no/sim.htm if you scroll down the page quit aways.
there is also helicopter add-on software available from australia and again, is this workable with the US version of FS2002? any info would be very much appreciated. also, if you could let me know of any other exceptional helo software for FS2002. i have been a private pilot for the past 35 years and have some helo time. i'm looking for true to life flight characteristics. thanks very much. vidge