Hi,
Thanks guys for the suggestions so far. Robert I tried putting my .txp databse through the osgintersection example and got nothing but the input z value returned as the result, which I assume means that no result was found Cheers Mark No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.29/1124 - Release Date: 11-Nov-07 10:12 AM
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