File on Finder not deleting, tried using Terminal etc... Help.

Heya,

I downloaded this application for my iPhone which installed itself into my applications folder. Soon after I downloaded it I decided I didn't really want it and tried to delete it, but it kept on saying "Unable to delete" cause it was in use or something. I did look at some threads giving advice on this subject and tried some other ways of deleting it but nothing happened and the file name is now "deleteme.rtf.app". Whenever I try Terminal it says there isn't a file on the desktop and I've made 100% sure all the letters are the right spaces apart etc, so now I'm stuck. Cheers for any help!

 

Ahhh legend, all cleared up. Sorry for such a pathetic question, but it was getting on my nerves. Cheers