im brand new to all thisso please be patient as im having trouble figuring a couple of things out! im having trouble getting games from my pc to my phone! ive heard people say i need to rename my file to .jar but which file is it??? for example i downloaded sonic to my pc extracted all the files and didnt know which one to change and rename to .jar? anyhelp would be much appreciated and if the insructions could be simple and not much technical language used would help as im just starting out!

Rename the zip file to jar, not one of the files inside.

thanks ive now done that! im trying to install the game on my samsung d900 using a data cable and ive got it onto my phone but it says unsupported file any help there?

That means the game does not support your phone, or maybe the files inside are corrupted.