Q2ID from Markzware Converts Quark Files to InDesign
Plug-in handles all document elements.
Q2ID converts all document elements, including: page size, style sheets, fonts, text, images, layers, lines, tables, linked text boxes, Pantone colors, and more. Conversion is enabled with a single click using InDesign's File>Open.
The product can convert QuarkXPress documents created on either Microsoft Windows or Apple Macintosh operating systems. An installed and supported version of InDesign v3 or v4 is necessary.