Aspirin should be avoided by adults and children when they have any viral infection. Reye's Syndrome occurs in adults too, and can be fatal. Whether the low-dose 81 mg./day aspirin taken by many over 50 or those with a history of heart/vascular disease should stop it when ill with a viral infection is an open question. I suspect the higher doses needed to otherwise treat fevers and pain are the problem.
The only reason to treat fevers in the 102-104 degree range is patient comfort. We can run temps. that high for days without evidence of harm. Treating the fevers is ok, but there is clear evidence that it significantly prolongs the duration of viral shedding.
A very cheap, relatively tasty, and almost always available rehydration solution is: Gatorade-1 qt. + Water-1 qt. + 1/4 tsp. salt. Mix and sip: 1-2 tsp. every 5 minutes.
Some of the people with the "Swine" flu are having vomiting and diarrhea. Keep some Immodium and/or Pepto-Bismol in your kits.