Hi Ivin.
There is introduction for writing apps and a HelloWorld App on the wiki.
http://www.eyeos.org/wiki/apps_introductionBasicly you need to upload the two files
app.eyecode and
events.eycode in a new folder (namend after your new application) in the Apps directory on your eysOS server.
Lets say /(eyeOSroot)/Apps/HelloWorld
Then you should be able to launch your App. Just type HelloWorld in to the Launch App Box.
Btw. have a look in the Applications Development Forum.
Cheers...