designing a pcb breakout board with micro dsubs
Just my opinion, but you don't get very far in any package without learning how to add parts to the libraries, and that once you know it, making the parts on your own is marginally faster and more reliable than finding it on some database.  

Sometimes you get lucky, and the part manufacturer will actually provide engineering files that can be opened or imported into your CAD program (sometimes using Ultralibrarian)