client date format

Hi All,

I need to change the client date format on the Integrity client, version 11.

Server Language is 'English (United States)'  . Integrity has been installed in English.

On the client (e.g 'View Member History' window) dates are displayed in the format 'DayOfTheweek dd,yyyy hh:mm:ss'

while we need to display in the format 'dd-mon-yyyy hh:mm:ss'

On what depend the client format? How can I change it?

Many Thanks

Martina