Hi I was just wondering how you put ringtones on your phone? I am having problems getting the mp3s coverted to dm files

Hi, i have the same problem here with my sgh t456, before i had some problems putting my ringtones, but i manage to find a way to put them, now its with the games, im sorry john i ve try the code but no result!

What happens when you put in this code: *#9998*52824678255# ?

Recently upgraded to a Samsung gavity t456 with rogers in canada.
(Was going to get the LG Neon 356 but it didn't come with a headset or data cable and not even Rogers had the cables)
But i've been looking around , using google, and have had no luck on the search at all.
But i have a pile of freeware games , like some card games and such that i would love to put on the phone , i use to use them on a Razor , and they should work on the samsung phone.
But the data program that came with this phone doesn't let me install games,
when i put the jad or jar files onto my phone through my memory card , it just puts a big question mark next to them.
Was wondering what i need to do, as someone suggested WAP , but i don't have a net connection on the phone.
Any help would be apprecaited.