How to use a Microsoft Publisher document on Mac (without using Publisher)?

I went from a Windows to an iMac. I had tons of documents from MS Office that I had to transfer to the iMac and for the most part it was pretty easy. I didn't want to buy MS Office for Mac, so I downloaded Apache OpenOffice, which seemed to take all of my Word and Excel documents perfectly fine.

The problem was the Publisher ones.

I discovered that Publisher has it's own special format and there was no other program to open and edit it. I did find a website that converted the format to something I could use, so I tried that, but when I opened the document, everything was messed up. Things like pictures were out of order and stuff got moved around to a different location during the reformatting. It's going to be a time consuming process to fix it.

My question(s) is: Is there another program out there that will keep my document intact and allow me to edit as it was before? Anything thoughts or advice would be greatly appreciated!