I don't think it's possible, but here QuarkXpress files can be converted into Indesign files for a small fee, which will save you purchasing the whole conversion software for only a single file or so: link deleted by forum host
I am so sorry - I just followed up on the last comment and was blown away buy what I learned. I would NEVER intentionally send anyone in the wrong direction like that & I apologize to the Author of the question for my answer - In all honesty, everyone designer and printer I know does this conversion process as part of their business. Perhaps they don't know (as I didn't), but if they do I ought to find some new friends. I truly apologize.
Markzware does one-offs, but apparently no longer for free. It is within the terms of the license to convert a file for a client if you are going to subsequently work on that converted file. What is not allowed is running a conversion service for files that you simply return, unedited.
My post wast't directed specifically at you as much as meant to be a clarification of the rules. Someone (perhaps you) said they knew people who used the software to convert files for other users. I just wanted to make sure future readers would understand the difference between using Q2ID as part of the normal get-a-file/convert/work-with-file/return-new-file-to-client workflow and offering an I'll-convert-your-files-for-you-so-you-don't-have-to-buy-a-copy service.
