[texhax] using /include

[richter at math.umn.edu]

need help with /include.
I can get  /include{<file>} to work provided that <file> is in the same 
directory as the source. However, if <file> is in a different directory, 
I get an error message
saying it can't write to the .aux file. 

What seems to be happening is that if
<file> is in the same directory as the source file then a file.aux file  
is created,
but if <file> is in a different directory then no file.aux file is 
created, and hence the error message.

(/input{<file>} does work (I guess it does not need a  file.aux file)).

What am I doing wrong?

Thanks,
Wayne Richter