If you are moving a publication to the Macintosh permanently, or for final output, be sure to check the following options:

"Translate file names in links." When this option is checked, PageMaker translates all file names in links from DOS format to Macintosh format. PageMaker can then recognize the linked files on the Macintosh platform, determine whether they are out of date, and (where appropriate) use them for high-resolution output. Note, however, that the translation process is typically not reversible. 

"Translate Metafiles to PICTs" and the "For printing and viewing" option. When these options are checked, PageMaker converts all Metafile representations (screen and print) stored within the publication to PICTS. Any graphic whose print representation was a Metafile, and is stored internally, can print in high resolution. Note that only Metafiles stored within the publication are translated to PICT.