JRoger, welcome to FlyerTalk!

There is no consolidated SkyTeam card. Your Continental card, however, gives you certain benefits on all SkyTeam flights and additional benefits only on Continental.

You can, for example, go to the First Class check in and board first with any of the SkyTeam partners. Your eligibility for upgrades, however, is restricted to Continental (and I think Northwest but I am not certain about that).