Change hash algorithm on CA of Windows 2008 without Hyper-V Editions

Hi All,

I would like to change the hash algorithm of a CA Server. However, I check the registry

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\CertSvc\Configuration\{CAname}\CSP]

that it does not come with "CNGPublicKeyAlgorithm" and "CNGHashAlgorithm"

The server is Windows 2008 without Hyper-V Editions.

Is it possible to change it without re-install the CA server?

Thanks

Best Regards,

Cardas