>We primarily run AutoCAD 2002 Mechanical Power Pack on
>machines running Windows 2000 SP4. We have drawings
>saved over the years in many different releases of
>AutoCAD (though, mostly R12+ in formats).
>
>We are having some problems with a few of our drawings.
>They are about twice the size that they should be in
>.dwg format. They are about 20x the size that they
>should be when we convert them to .dxf format (which
>we HAVE to do because of our CNC Laser software).
I can't help you with your problem, but you should realize that many news servers strip attachments from postings to groups that are not "binary". Other servers will reject the message entirely. So a lot of people who might help you cannot.
Other people read newsgroups by email, and if those people are unfortunate enough to download messages as they arrive, then you've inconvenienced people who might not be able to help you.
You probably should repost this message, but leave out the attachment. Instead, make it available on a web site somewhere and include a link to that location in your posting.
There's another group, comp.cad.autocad, that might also be helpful.