Tele Conversion Lens

Tele Conversion Lens
Need help choosing the lens of my Sony Slr Camera to give me sharper images?

I am not a photographer by any medium, but I like to buy a lens to be inserted into my Sony SLR. Most of the photos I take are of children playing or action shots at football matches. Any suggestions? I was looking at the Sony VCL-DH1758 Telephoto Conversion DSCH1 Digital Camera, Sony VCL-DH1774 74mm 1.7x Tele Conversion Lens for Sony Dsc-H7/H9/H50 Digital Cameras or Sony 75-300mm f/4.5-5.6 Compact Super Telephoto Zoom for Sony Alpha Digital Slr Camera. Do any of these do the job?

The list of cameras that are not interchangeable lens DSLR from Sony. Add-on lenses are horrible, just horrible. Invest in a true interchangeable lens SLR and use Sony Long a primary objective to meet their sporting aspirations.

Comparison 2x tele-conversion, 0.6x wide-conversion lens for CANON FV400 50mm STD lens.