I have been playing around parsing the tech tree.
I have created some webpages.
Check it out and let me know what you think

http://webpages.charter.net/trevorpowdrell/index.htm

Also there are a couple of mistakes in the tech file.

TECH 79 _4DEnterance Description has an extra single quote on the end

TECH 97 BasicRepair should really be AdvancedRepair
as TECH 96 is basic Repair

TECH 105 XenoManipulation Tech_Requirement "Brainwmapping"
should be "BrainMapping"