Urgent!!! Password in VB to match in NT

A Year full of prosperity for every one.

I have a form in VB wich asks for a user and a password. These need to be compared or validated against the user an password in NT.

Is this possible? and if it is, wher can i find information about?

If any one have code already written about it, could please send it to me.

Thanks a lot everybody

Regards

Tony