I've been thinking about this abit, and although I do not have the time right now to input the stuff, here are my thoughts...
1) Power points - this is probably the greatest challenge as there is nothing in etools that really takes this into account. About as close as you can get is to make a feature for each level of each psionic class which assigns the appropriate number of points - features will stack and they have a %d variable that allows you to add up the features and have only one entry - so what you would end up with is a line in features that says something like
Power points: 9 + ability modifier
If the feats were done with every psionic class in mind, then you could do something like
Power points: 9 + CHAMod
2) Psionic classes - will have to be entered manually into the database - however this is not as tough as it sounds
3) Psionic Feats - easily done, though again there is nothing in etools to affect with the feat so it would be descriptive text only.
4) Psionic types - entered as domains
5) Powers - entered as spells, and then set so only psionic characters can use them - once the Psionic classes are added directly to the database, they will appear in the list for spell class
6) Modes - entered as feats that are selectable only by Psionic classes - I'd say entered as bonus feats so that you could relegate how they are used - but bonus feats, although they can be assigned to other classes are hardcoded to Wizards anf Fighters
That's about as far as I got - the how should be located elsewhere on the various boards. If I ever get around to it before someone else does I will be sure to let you's know...