• The Silvretta region is located on the borders of Austria and Switzerland. It's a well-known skitouring area, one of the classics.  The slopes are easy and snow is abundant. Most mountain huts are well accommodated with showers, spacious dormitories and copious breakfasts. It's a perfect place for an introduction to ski touring.
• The weather is (as always) unpredictable.  We had it nice and warm in March. But friends told me they were snowed in for several days and had to be brought back by helicopter because the risk of avalanche was too great.
• Skitouring can be practised from February till May depending on the altitude and region.  The later in the season, the longer the days are ...
• It's always better to take a guide if you've never done it before or if you don't know the region well.  Skitouring is not like a summer hike in the mountains : risk of avalanches, crevasses, bad weather are very real !
• Touring skis differ from alpine skis. They have a special binding to be able to climb in the snow.
• Ski touring boots differ from the usual ski boots.  However, I always use my normal ski boots (Salomon SX-85) and had no problems.  With the upper buckle opened and the adjustments put in 'walk' position, they are comfortable too.
• You can hire in most outdoor stores a tourski package consisting of touring skis, skins, an avalanche receiver ('ortovox'), a shovel and (if necessary) ski touring boots. 
• A good overview of ski touring (also called backcountry skiing) can be found at the rec.skiing.backcountry FAQ list
• Ski touring gear is explained in detail at IfYouSki
• Another remarkable site is Amar Andalkar's Skimountaineering and Climbing Site