If you'd like to obtain a program CDF account, you have come to the right place.
However, because the request process is done over a "secure" communication channel (using HTTPS/SSL) it is first necessary to configure your browser to recognize CDF as a trusted Certificate Authority (CA). If you have already done this previously, and wish to proceed to the account request form, click on the following: https://www.cdf.toronto.edu/accounts/permaccount.php. Otherwise, please continue reading below.
At the beginning of each HTTPS request, CDF's web server sends your browser its public encryption key as part of the security certificate. Among other data, the certificate contains signature of a Certificate Authority (CA) that certifies that this public key indeed belongs to CDF's web server. Upon verification of both the server's, and the CA's certificates, you browser can be ``sure'' that the secure connection can be trusted.
For that purpose, you need to install CDF's Authority certificate into your browser. It should be as easy as clicking on this link ca.crt, and following the dialogue presented by the browser, to permanently add the certificate to the collection of recognized certificate authorities (which came packaged with your browser). Exact procedures differ from browser to browser. Alternatively, you can right-click on the link, save it to a file on your computer, and install it into the browser manually.
Once you have installed CDF's CA certificate, your browser is configured to use https links on CDF's web site.
One further note. In order to use the system you need to have cookies enabled in the browser. Most browsers accept cookies by default, so if you haven't disabled that feature, you don't need to do anything to enable it.
Now you can proceed to request a program account.