i have created a windows application quite a while ago, AddressBook.exe. Now i'm creating another windows application, say WinApp1, which i need to have an address book in it.

how do i run the AddressBook.exe from WinApp1? i would like to run the AddressBook when i clicked an icon on the toolbar of WinApp1. i don't need AddressBook to run as an MDI child of WinApp1, just as a modal form.