>How is possible create reports with metafiles as background image ?

Stefano,

I'm not sure exactly what you mean by metafile, but if you are filling in something like a tax form you can scan the form and use the bmp as "wallpaper" for your report. Then adjust the controls to be in the right locations. The wallpaper will need to stretch from the header to the footer, so you will need to play with it a bit.