Still trying to learn/use ProxHTTPSProxyMII

[KnowNothing]

I am still trying to configure ProxHTTPSProxyMII.

It says that I need to do the following:

install ProxHTTPSProxy's "CA.crt" to the Client's store of trusted certificate authorities.

How do I do this for Windows XP 32-bit?

I found if I need to do this it is already done when using Windows 7 but I need to do this for Windows XP.

Please help.