It would be hard for governments to deal with a pandemic assuming that there is not a simple cure for the disease.
Of course, the first thing to try would be prevention. We see governments today encouraging inoculation against swine flu. With enough advance warning, governments would want to make vaccines available to the people.
If there is no vaccine, the next step might be to close schools. Schools tend to be a very good way to spread diseases and the government would want to limit the speed of the spread.
I would think that the government would also want to set up special facilities that could treat large numbers of patients. In a flu pandemic, having medical treatment (IVs and such) would surely save lives even if the flu itself could not be cured.