How do I find a sport for my little brother.?

[Kamron]

I am 15 years old and I have 2 little brothers. My younger bro is 10 and my baby bro is 7. My brother and I are worried about my baby bro because all he does is sit on the computer. My moms mother or my grandmother is teaching him that it's ok to sit on the computer and eat donuts. My bro is not overwieght... Yet. All my grandmother does is sit there and talk smack about my father to my baby bro and I hate it. He does not believe it of course. But after a while that may change. My father works very hard to make money and be generous enuff to put a darn roof on her head and she just blasts her opinion to my bro. My father won't kick her out because of my mom but iit is starting to affect there relationship as well. I need to knowhow to get him to play with me and my other bro instead of her. Maybe a sport. She is evil. I have already had two tragedys in my life. In 2007 I lost my house to the wildfires and I lost my older brother to a drug mixture. Please help. I'm running out of options. God bless.