www.epicski.comThe Epic archive is especially useful for digging up insights on New England skiing.
Also, many of the DCSki regulars have skied a lot in New England and can probably offer some ideas on specific places.
In terms of the drive, Killington and the resorts of Southern VT are the closest big NE places from DC, but most of us prefer the harder to get to places such as Stowe, Jay, MRG, Sugarbush, Sugarloaf, Wildcat, Cannon, etc.