Most error pages on IIS can be customised [2]. The default 403 error pages that relate to the use of Digi-Access™ are stored in the C:\WINDOWS\help\iisHelp\common\ folder. The 2X Application Server Administrator should download the Digi-Access™ error 403 pages [1] and place them in a new folder: (e.g. C:\WINDOWS\help\iisHelp\digi-access\ ). The server should be configured to display these new error pages before being restarted to complete the setup procedure.
Links:
[1] https://www.digi-sign.com/downloads/download.php?id=digi-access-403
[2] http://technet.microsoft.com/nl-nl/library/cc753103(WS.10).aspx
[3] http://www2.digi-sign.com/403-7.htm
[4] http://www2.digi-sign.com/403-12.htm
[5] http://www2.digi-sign.com/403-13.htm
[6] http://www2.digi-sign.com/403-16.htm
[7] http://www2.digi-sign.com/403-17.htm