Hive: HKEY_USERS
Key: .DEFAULT\Control Panel\Desktop
Name: Wallpaper
Type: REG_SZ
Value: C:\BMPDIR\MYLOGO.BMP BMP of your choice
Hive: HKEY_USERS
Key: .DEFAULT\Control Panel\Desktop
Name: TileWallpaper
Type: REG_SZ
Value: 1 Tile
Value: 0 NoTile
The bmp names have changed for Windows 2000. The W2K bitmap is winnt\system32\n2k.bmp. This tip applies to both Windows 2000 and NT.