If you don't get a good response here, you may want to try an autocad forum.

SLO Kermit wrote:

We just upgraded from windows 2000 to XP, and from office 2000 to 2003. We
often had used XL to generate BOM's for drawing- in Technic Bold font. The
XL sheets were copied & inserted in ACAD as a link. The linked Technic is
now displayed as rectangles & odd characters.

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Dave Peterson