Adding Watermarks to Wizard 97 Pages
This feature is introduced in MMC 1.1.
By implementing IExtendPropertySheet2::GetWatermarks, you can specify the bitmaps used for the watermark on Welcome and Completion pages and the header on interior pages.
By setting the pszHeaderTitle and pszHeaderSubTitle members of the PROPSHEETPAGE structure, you can specify the header title and subtitle text for interior wizard pages.