Does anyone know how to convert data projected using the Lambert projection coordinate system (specification follows) into straight Longditude/Latitude pairs (also based around the Clarke 1866 spheroid)? 

Projection    LAMBERT    
Units    METERS    
Spheroid    CLARKE1866    
Parameters        
 1st standard parallel    70 0 0.000    
 2nd standard parallel    50 0 0.000    
 central meridian    110 0 0.00    
 latitude of projection's origin    0 0 0.000    
 false easting (meters)    0.00000    
 false northing (meters)    0.00000

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To keep it on topic, Perl code to do this would be great, but references that explain the conversion process (in layman's terms!) would be good too.

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In reply to (OT): Conversion of 'Lambert projection' data to longditude/latitude? by BrowserUk

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