Even better MapInfo tool:
info:
http://www.routeware.dk/toolbox.php
ToolBox is a collection of MapBasic programs for performing these tasks:
• Add Nodes
• Convex hull / Rubberband
• Extended Table Info
• Locate the nearest object in one table for all objects in another table - Very fast
• Locate the N nearest objects in one table for all objects in another table - Very fast
• Location of facilities
• Map Coloring
• Minimum spanning tree
• Remove holes from regions
• Simplification of polylines/regions. This removes insignificant nodes from objects
• Split of (poly)lines at predefined distances, e.g. for every 100 meters.
• Split multi-section polylines/regions into single sections
• Triangulation (TIN)
• Voronoi polygons
direct download:
http://www.routeware.dk/download/toolbox.zip
install it and use first menu option "Add nodes to Line"