Trying to use Paint to peice together several images of cars I have on my hard drive. Want to make a complete page. TIA

Most web pictures, if they have been optimized are 72 ppi, which is the standard for display.

So, the total dpi/ppi for a 8.5x11 piece of paper would be 612 pixels by 792 pixels.

Of course the higher the ppi/dpi the sharper the picture.