Strange Xp_cmdshell Permissions...

Hey there,
I have a procedure that runs a PERL script through xp_cmdshell. The PERL script opens Excel and has Excel open a document so that it can parse through it.
When I run the PERL script directly from the command line, it works perfectly.
When I run it from xp_cmdshell I get the following error:
Win32::OLE(0.1502) error 0x800a03ec in METHOD/PROPERTYGET "Open" at c:perlexcelTestRead.pl line 10

Now I initially thought that this was a simple permissions problem, but the account that xp_cmdshell uses has full permissions on the directory the file's in and to the Excel application. Wierder still, I can use PERL to read and write files to my heart's content. I just can't use the OLE Excel object to open an Excel file.

Anyone encounter something like this before? I think the fact that it's PERL is coincidental. The issue is that I can't use the Win32 Excel.Application object to open Excel files when using xp_cmdshell to do so. Remember, this works when I run it from the command line.

Thanks for any help you can provide
Matt