In reply to achillespilot:
There are quite a variety of skills required to ascend Mont Blanc via the Gouter route. Yes, you can hire a guide to take you and therefore not have to worry too much, join someone more experienced / skilled than you or choose to tackle it with someone of similar experience levels having fun developing the skills and knowledge along the way.
There are plenty of articles, video clips and books that will help. Here is an excellent article by Charlie Boscoe:
http://www.ukclimbing.com/articles/page.php?id=5784
I also recommend Bruce Goodlad's book 'Alpine Mountaineering'
You will need to be fit, acclimatised, the route in reasonable condition and a good stable forecast. The route is mostly walking and scrambling in the lower section and snow / glacier walking for the upper section. There is a narrow ridge section and lots of loose rock around in the lower section which often gets knocked off by less careful people. At the least you would need to be able to move roped together on glacial terrain and know / have practiced how to perform crevasse rescue as well as having good crampon and axe skills.
In Chamonix forecasts are excellent, available in English and in pictures (!) and route information can be obtained from the friendly Office de Haute Montagne in town.