PLEASE HELP ME OR WRITE ME HOW CAN I SOLVE MY 3 QUESTIONS!!!

1) HOW CAN I SAVE THE SCREEN IMAGE,NOT ONLY THE WALLPAPER BUT ALL I CAN SEE ON MONITOR,ON A JPG FILE???

2) HOW CAN I CONVERT/SAVE A BMP FILE IN JPG WITHOUT ANY EXTERNAL OBJECTS OF VB???

3) HOW CAN I PUT AN IMAGE ON WINDOWS WALLPAPER???


HELP ME THANKS