Rivatuner digitally signed driver.

I got the message a digitally signed driver is required when installing Rivatuner. I clicked the "update now" button at the end, does that install the digitally signed drivers or am I meant to use the included update file somehow?

 

Rivatuner was replaced ages ago with MSI Afterburner.

 

I only downloaded Rivatuner to get D3DOverrider. Does Rivatuner not have any use anymore?

 

You can use D3DO without Rivatuner. Rivatuner is now legacy and no longer updated.