Without knowing which varietal you're looking for, I can generally recommend the "Black Box" line, which I believe is widely available in most of the US. I have the most experience with their Cabernet Sauvignon. It's nothing earth shattering, but if your goal is to just have wine on hand to accompany your regular meals, without worrying about quick spoilage, it is perfectly adequate.
I've also heard some good things about Hardy's boxed wines, FWIW.
- Chris