Chris,

Make sure that XP box has a mailto item in the registry. It should be right under HKEY_CLASSES_ROOT

>The following code pops up an Outlook "new msg" window. This works fine on Win2k PCs. But no window is displayed on WinXP machines:
>
>

>ShellExecute(0, "", "mailto:" + lcEmailAddress + "?Subject=" + lcSubject + ;
>             "&body=" + lcMessageBody, "", "", 9)
>