Philippe,

I took a look at their web site and, honestly, I wouldn't recommend going that way because it makes you totally at the mercy of their SDK (i.e. any bugs or limitations become yours), you essentially give them money so you can do proxy development. In other words, you wouldn't even be coding actual iPhone applications as you'd be isolated from the Cocoa SDK.

If you're remotely serious about iPhone development, just buy the cheapest Mac Mini you can find (even a used one would do as long as it's Intel based) or, at worse, install OS X on your PC (if compatible - your mileage may vary on this).

That's like trying to do Windows Mobile development on a Mac or WPF/.NET on Linux, honestly.

Thank you Benoit for your clear (thus not really optimistic for my case ) comment :)