Remote SQL/Database Connection

Hello,

I want to make my installer discreet to users of my forum(specific group id). All I want NSIS to do is verify the username and password from my forum database and then proceed.

Is there any way to accomplish this? or perhaps any plugins?

You can write a php file that will return a certain value if login/pass are correct, and load that with one of the internet plugins such as inetc or NSISdl.