Michael,


To the best of my knowledge;
.tr is a "Unix Tape Archive = TAR without compression (tar)" which is an
uncommon file type.
.pdb is a "Brookhaven Protein Databank File" also very uncommon and
probably requires a specific piece of software from Brookhaven.
.prc is probably the Corel extension for Corel's presentation files. Would
require a Corel program (to be installed).
.tlb is the Borland Type Library files.

Part of these may not be compatible with Windows operating systems.

J Dent.




At 10:45 PM 3/23/2004, you wrote:
>HI All,
>
>I downloaded from the Internet some documents that I would love to read.
>unfortunately, I do not know/have the right files readers. The files have
>.tr, .pdb, .prc and .tlb extensions. .doc and .pdf I can read since I have
>Word and Acrobat reader. Please help
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