http://www.mindworxs.de/zwiki/DeepaMehta

Sometimes there are links of the form "https://www.mindworxs.de/zwiki/DeepaMehta". When you click these you will receive a certificate error if you work from a modern browser such as IE 7 or Firefox 3. To avoid this, you need to install the root certificate (which unfortunately is not one of those included in normal browsers), and additionally, the intermediate certificate (which unfortunately is not sent as with usual web servers).

Proceed as follows (in IE7, Firefox 3 may be different):

• Download them from from http://www.cacert.org/index.php?id=3 by selecting "Root Certificate (DER Format)" and "Intermediate Certificate (DER Format)", respectively.
• Doubleclick the first one > Open > Install certificate > Next
• On Vista you have to select the Certificate Store. Browse to "Trusted Root Certificates".
• Click "Next" several times and examine whether the presented fingerprint is 13:5C:EC:36:F4:9C:B8:E9:3B:1A:B2:70:CD:80:88:46:76:CE:8F:33 .
• Doubleclick the other one and install it to the default certificate store