Truthfully Gunthan, one of my friends has a hosted runescape server just like you. They play with clients but the source of the Java game is sealed. If it wasn't there'd be massive amounts of duplicates of Runescape up upon the web.
Also you said the source was lost to miscompiling... What were you using to compile it and did you know that compiling can't destroy the source?
-Gandolf
P.S. One of my friends also had a sister who was "retarded", she died at the age of 13 suddenly and on her birthday. Be careful of word choice.