solved on system with Office 2003 standard edition by kb 829072. See
"Prevent Hyperlink Warning" thread in Office Genereal Questions discussion
group

"thelemeuk" wrote:

Some computers with Office 2003 with a hyperlink embedded in an Excel
workbook will not follow the link even to a local file on the hard drive
without a warning message.

I have followed the instructions on the
http://support.microsoft.com/?kbid=829072 link, trying both registry entries
for Common Security and Excel Security. I have also tried the other
suggestions. None work.

I support an application used by clinicians and researchers which contains
frequently used links to sound (.wav) files. This application is made
unusable by the repeated warning messages.

Any new answers please?