help please!

I downloaded the demo for SE K800i, and i don't know how to install this demo on my phone. Can anybody help me?
Thank you.

Connect your mobile phone

Connect your mobile phone with your PC and extract the jar/jad file from SE.zip in "Others" folder on your mobile phone. Open the File manager on your mobile phone and go to "Others" folder .
Select GPSWatch file, now the installation starts.