Hello peoples!!

Im a noob and Ive done some idiotic things in the console.
First is did:
Matthew:/home/matthew # rpm -i LimeWireLinux.rpm
and this did not produce the string of chinese Ive become used to, but for some reason LimeWire showed up in my KMenu. I clicked on it and nothing.
so then I tried:
Matthew:/home/matthew # rpm -Uvh --nodeps LimeWireLinux.rpm
and it said Preparing.... ooh!! LimeWire already installed.

I think I have a problem with my Java. I believe I installed it in the wrong directory last week. /usr/lib/.... It works in Firefox.

I also have a similar problem with azureus. Azureus will kind of start but not with its pretty interface.

Questions:
Was it necessary to do su and password to install LimeWire? [Noober]
Is Java in the correct directory? Would that matter? [Noob]
Do I need the alien thing (A perl script for adapting packages) I read about on another post? [Geez]
What do I do? [Adventures in Noobland]

Wow!!!
Thank you all sooooo much for your responses!!!
I know my questions were soooooo vague and difficult, but you all responded with such simple and clear suggestions and ideas!!! and so quickly!!!!
I'll be sure to return the favor!!!!

P.S. Please respond to this to tell me Im impatient and that all the answers are here without saying exactly where because I NEVER look first because Im such a noob.

Congratulations for being helpful!!!

~~Matthew