Grant access to certificate’s private key in IIS 7.5

After a bad week (where my work machine died), I’ve finished reinstalling everything. This time, I’ve went with Windows 7 and as a bonus, I’ve ended up with IIS 7.5. One of the things I needed to recover my working environment was to configure access to the certificates’ private keys (I have several WCF services which need certificates). In the old days, the solution was to use the httpcertcfg