Map + Lighting Problem

hi there, i'm new in the forum and i'm new to directX, i got a Problem i've drawn my map without lighting with a raster of 5x5 vertices, everthing fine till now .. i did turn on the lights and my app draw me some crazy shaddows that i can't define, does someone know about this kind of problem help would be nice :) i attach a link to the picture here, this sourcecode works 100% if lights turned off the whole map will display correctly, i'm not going to poste sourcecode cause i think it's anything of directX (newb) common Problems
 
the "problem" with turned on lights screened here:
 
http://img522.imageshack.us/img522/1838/problemrl.jpg
best regards M2k