in reply to Excel 2003 + Perl

Since this works logged in but not under ASP, it seems like it may be a permissions problem with the (i presume) IIS user account not being able to write to the path you're saving in (or maybe not having full rights to Excel/libraries.

Side note: you might want (if for nothing else just to be explicit in the code) to hide the excel window (it miught be by default).. it's something similar to $Excel->{Visible} = 0 (don't have exact syntax right in fron of me at the moment)