I found out that the dome lights of the cockpits were badly misplaced....thats why they wont work.

Here is my fix, just copy that lights-section in your 737-200 aircraft.cfg and overwrite the old one.

[LIGHTS]
light.0 = 1,   5.10,   0.00, -7.20, fx_beaconb
light.1 = 1,   3.10,  -0.10,  6.35, fx_beaconh
light.2 = 7,  33.60, -1.50, 3.50, cs737_vclightwhi
light.3 = 10, 33.40,  1.60, 3.30, cs737_vclightwhi
light.4 = 8,   2.00,  -14,  -1.00, cs737_vclightwhi
light.5 = 8,   2.00,   14,  -1.00, cs737_vclightwhi
light.6 = 9,  33.00,   0.00, -5.00, cs737_ww
light.7 = 9,  -6.87,   2.00, -4.50, cs737_ww
light.8 = 9,  -6.87,  -2.00, -4.50, cs737_ww


I will provide a full shockwave 3d lights version soon....