adapters for computers

#11B seems to be the one you want:

http://www.voltage-converter-transformers.com/plugadapters.html

Since you are too late for Internet shopping, it is possible that the airport from which your trans-Atlantic flight takes off will have shops selling adapter plugs, usually displayed with other travel accessories. I know Toronto's airport does because I bought one there a couple of months ago. Otherwise, stores at your destination will have them. You're better off with a grounded plug adapter, to match the one on your machine. It will have the two round pins, but also a hole for a similar pin that protrudes from the receptacle to complete the ground. See it here http://www.francetravelplanner.com/details/electric.html.
Suppliers promote universal kits with an assortment of gizmos but they are relatively expensive and relatively heavy to cart around. A single adapter shouldn't cost more than $10. The big BHV department store at 52-56 Rue de Rivoli, 4th arrondissement, Metro: Hotel de Ville, can help your daughter.

I have a computer with a French plug (two round pins), and I have an adapter -- I think I bought it before a trip to the States -- that is a universal adapter. I believe I bought it in France (probably at FIAC), but I would try to get it before departure. If not, the airport is a good suggestion.

Thanks everyone for your tips. I know we left it too late so I will get her to look in the Toronto Airport. I knew I could count on someone on this website!

tineke,

I hope your daughter has a lovely visit in France -- Paris? -- and that she finds her adpater. These things have a way of working out.

I use two adapters, one the converts the 3 to 2 flat pins, and then another one that converts the 2 flat pins to 2 round pins.

Both should be fairly easy to find. A universal adapter kit is more than you need, I think.