Hi Cheri,
My son had his legs burned in a fire while camping with his dad last summer and the Plastic Surgeon recommended a cream called "ScarZone". I buy it at Walgreens, it isn't too expensive, lasts a long time and has Aloe, SPF, and silicone in it. Dr.'s often recommend the creams with silicone to help prevent scarring.
Another item they had me use for my son was pressure bandages. The pressure on the injured area helps prevent the scar from raising up in ugly, tight ridges by keeping it flat. I used what I called "socks", which was a stretchy, tube material that comes in a variety of sizes, which I got from the physical therapy deptartment of the the hospital for my son. It stayed snug and tight on his legs, giving the pressure he needed, but still allowed him to be active while keeping the cream bandages in place.
My son had pretty severe burns on the back of his legs, but with these techniques has very minor scars now. They also say most scar prevention should be done in the first year or it is mostly too late.
Good luck with everything!
S.