Help! What’s the most effective remedy for a red wine stain on carpet?

Last night, a guest spilled red wine on our carpet. Another hurriedly suggested pouring salt over the stain, which is supposed to act to lift the wine off the rug. Not knowing a better alternative off the top of my head, I tried this, using the big box of kosher salt I had in my kitchen to pile on a mound of salt over the spot. We waited, figuring it was best to give time for the salt and wine to react. And 20 minutes or so later, some of the wine had been absorbed though the spill is still visible on the carpet. Now what? Anyone who knows some genius, tried-and-true red wine stain removal techniques and/or products please speak up now!