<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Milesjamie:
If I fly on Air France Metal, but with on a British European, what are my chances of getting Air France miles (or, really what I want, Delta miles)?</font>
I think your chances are good: no direct experience with the scenario you are looking at, but with the Alitalia MilleMiglia programme (which, for reasons to complicated to go into now is the one I'm collecting my SkyTeam miles into) the terms and conditions of the programme specifically allow collection of miles on SkyTeam partner codeshare flights, as long as the flight number shows the partner prefix.
Also, if you look on p. 35 of the SkyMiles member guide, you'll see that for many of the partner airlines it is indicated that no credit will be given for code-shared flights: this wording is absent on the entries for the SkyTeam partner airlines.
So, basically, if this codeshare has an AF flight number, I think you're in luck.