How the heck is this supposed to work?
Three things.
1) Adding new equipment for the character to select?
2) Creating custom equipment from existing delivered items, like custom +5 Falchion with cleaving?
3) More likely to get more answers over on the HeroLab forums than here.
The user community is pretty good over there and should be able to help you more quickly there.
What type of stuff are you trying to enter? I've spent the last week insomniacing over the HeroLab editor learning how to enter things.