those "." can be darned hard to see. are you sure of your typing skills?
I only run 2000, but unless Autocad has changed all the rules, renaming
file.bak to file.dwg should let you load the file. it used to be that
when you saved the dwg was just renamed to bak.
unless the bak you are renaming was not an autocad backup file or unless
the bak is corrupt too.....
which would be unfortunate.
If you are renaming it in Windows Explorer, you need to be able to see
the DWG extension. If you do not you need to change the setting for
Windows Explorer to NOT hide the extension of known file types.
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