Passing pointers to various win32 aPI functions

Hi friends,
I want to create an application simmilar to Microsoft System Information in VB and i'm new to VB.I know some win32 API functions to get necessary system information.Now How can i pass the ptrs to differant API structures(eg SYSTEM INFO structure)?Who is going to help me?

if you use the Declarations for the API functions and their Types from the API Viewer Add-In in VB6, you can simple declare a variable of the declared type, fill its elements and pass that to the API functions.