Hi Stephen,
thank you, I'll try exporting my certificate. A very last question: when I
try to export it, a window is opened asking me for the path and type of the
certificate. I could not locate it! Where is it normally installed?

Many thanks,
best regards,
Valeria

"Stephen Bullen" wrote:

Hi Valeria,

yes, I used SelfCert... what else should I use to enable the "Always trust
macros from this source" option on other computers?

If it's only one or two computers that you 'control' (e.g. work colleagues),
you might be able to get away with exporting the signature from your machine
and installing it on theirs. Use Control Panel Internet Options Content
Certificates to export/import the certificate.

For more general distribution, you need to purchase a proper digital
certificate from someone like Thawte (www.thawte.com) or Verisign
(www.verisign.com)

Regards

Stephen Bullen
Microsoft MVP - Excel
www.oaltd.co.uk