2271 Looking for a Fireworks/Balloons Company in Tuscany

Having previously considered getting married in Le Marche, I'm now getting married near Siena in May 2006 (mainly as it would have involved 2 flights for most of the Irish guests had we gone to Le Marche).

I'm looking for a couple of suppliers in this area to:
(1) do a fireworks display
(2) provide decorative balloons

Any recommendations?

Many Thanks.