Does anyone here have experience purchasing trenitalia international tickets online?

I'm trying to book the Artesia night train from Bologna to Paris in January. Trenitalia quotes me a great promotional rate (270 EUR) for two in a double sleeper - but booking it has proven impossible (despite plenty of promotional availability). In the past 2 days I have gotten 8 separate error messages. On the two occasions I was finally able to get to the credit card page the site refused to accept any of my credit cards.

Is there an easier way to purchase with trenitalia from the U.S.?

By the way, I tried calling RailEurope but they want $160 more for the exact same trip in the same double cabin (a 40% premium). Ouch! Also, I've considered booking online through SCNF (same price as trenitalia) - but I'm not certain I'd be able to pickup my ticket in Italy. When I put in a US address into SCNF I'm directed to the RailEurope site (though, apparently, if I lived in Antarctica I wouldn't have any trouble ticketing with SCNF!).

I would greatly appreciate anyone's suggestions.

Thanks,
FlyerBeek