I get mailings from N.E. School of Metworks and they are have there First (1st) Anual Car Show on June 11 2006. Don't know what its going to be like.
Show is at there Hooksett NH location @ 81 Londonderry Turnpike (Rt 101 Exit 1) in Hooksett NH. Gates open at 10AM and its like $10 to show and free to attend.

Other Shows:

4x4 Jamboree 8/5-6/2006 Champlain Vally Fair Grounds Essex VT

Ford Fun Weekend 8/19-20/2006 @ New England Dragway in Epping NH

NH Tech College Annual All Vehicle Car Show 9/10/2006 @ NH Tech Colege Nashua NH

Hemming Motors Car Show (25 years and older only) 9/15-17/2006 @ Green Mountain Race Track Pownal VT (near Mass border)

NSRA Street Rod Nationals 9/22/06 - 10/1/06 @ Champlain Vally Fair Grounds Essex VT

There are other I know of. PM me if you want to know them.