Table using data from defined lookup

Table using data from defined lookup

I created a lookup described in the helpdesk article, by doing a lookup on the ID's.
When i create charts, it works perfectly, and i can see all related forms.
But how do i create a table displaying data from 2 or more lookup tables?
Whenever i click New Report > Table, I'm asked to choose a table, and i can only see the columns from that table?