Miroku, I'm not a techie, so I won't give you useless info. I too have the Garmin 400 series trainer and find I can run it on either Windows 2000 or XP. If you can find or borrow an old 2000, you should be fine.

I'm not a techie, so I don't buy my own PCs. Every time someone trashes theirs, I take it up. My OSs range from Win 2000, XP to Vista and I am waiting for Win7 to go obsolete. If I can't run a program, I'll feed it to different OSs until one accepts it ... a bit like keeping a few pets at home to keep MS troubles at bay.

If it's any help, and if you're referring to the Garmin 400W/500W trainer, it seems to install and function OK on 64-bit Windows 7, therefore I assume it would work just as well on 32-bit Windows 7. Extrapolating, it should work fine on Vista. Have you tried it? If so, what was the error?

I haven't tried that actually - I think I've been trying the 430. I'll give it a go, thanks for the tip.

Very many thanks for the info. The Garmin 400W/500W downloaded fine.

Whilst visiting the LAA rally at Sywell yesterday, a helpful chap on the Transair stand made an obvious suggestion which was to look on U tube. I hadn't thought of that and there is quite a lot of useful info.

Just for mac users: CrossOver seems to be able to run Garmin 430 to a certain extent.
The display is tainted by a yellow patch I cannot get rid of, but generally it seems up to now to work.

Guys,

I was able to get the GNS 430 simulator to run on Windows 7 by going to the properties on the icon and in the compatibility tab check to run the program in compatibility mode with Windows XP (service pack 3) and check Run this program as an administrator.

Several functions of Garmin 430W differ from vanilla 430 and so I'd imagine you need a dedicated 430W trainer.

We have a 430Wi a/c but I've never seen/used a 430W trainer.

Cusco.

What a mess of opinions ... the Garmin GNS430 training app does run on Win7, BUT - you need the compatibility mode working and that is part of the Win7 Professional, the small&home versions don't support the necessary mode. It even runs under Vista with the compatibility mode switched on for the program, but I did not check Win8 yet.