pagemaker 5 kannada

Hi experts,

I have a lot of old documents in pagemaker 5, which are in Kannada language (A South Indian language). Now I need to have them in PDF format. How can I do that? I tried opening them in pagemaker 7, but font is not at all readable. Also, I tried opening them in InDesign, but InDesign says it doesn't support pagemaker 5 documents. Kindly suggest me a workaround for this.

Thank you.