I'll check this link and the links that Tom Ogilvy posted. As for why I
need to do this - it's an internal corporate application that Excel is the
best tool we have for. However, I need to do some serious preprocessing
(formatting, subtotalling, etc) before the user gets the data. Cross
process marshalling from VB6 is way too slow, so the actual VB code to do
the preprocessing needs to be in an Excel Add-In, which must be signed to
prevent the Excel Macro Security from preventing the application from
running.

Mike.


"jp" wrote in message
...
http://www.microsoft.com/office/ork/xp/two/admc04.htm

The above link appears to explain it but it is beyond me.

Why would you like to sign something that may be a virus carrying item?

Cheers

John
North Yorkshire UK