First thing - please can someone make my link shorter!
Regarding a cure:
Taking prevention first - plans are underway for a prevention study on the basis of the recent Vit D research (by Prof Ebers). If successful, this could mean that people (I'm guessing Vit D given to pregnant women and young children) in the future won't get MS.
Stopping the inflammatory aspects of the disease - quite a few powerful drugs e.g. Campath in the pipeline. The trick will be to reduce the potential side effects of these drugs whilst retaining efficacy.
Protecting nerves already damaged - Lamotrigine trial (testing whether it offers neuro-protection) has ended and results expected in April. Neuro-protection trial using an element of cannabis underway with results expected in 2011.
Repairing the damage. Lots going on including Promise 2010 etc. May involve implanting stem cells, but more likely to involve encouraging / promoting repair from our own stem cells.
Full genetic analysis should be completed this year. This should identify various pathways which could be targeted by treatments.
So alot underway. And I suspect that Harry Z's idea of a researcher stumbling across something will also play a part.
Here is a recent radio interview with a couple of scientists on the Promise 2010 programme, including Prof Giovannoni.