SiteSkinner Pro (SSP) is a powerful developer's tool for capturing data from structured files, particularly from the Web.
I've used data extraction tools since 1990, especially Monarch from Datawatch. Well, SSP blows away Monarch, at a small fraction of the price.
SSP provides a Visual Basic like command center, and powerful functions can slice the data you want in any way you might need.
The included sample files will have you 'skinning' the web in no time, and the author provides phenomenal support and continual new releases.
STRONGLY recommended.