Creating a free account here would let you upload the ringtone for us to try it - or you can upload it to a file sharing site and post a link.
Until then, what's the file type of the ringtone file? mp3 or something else? (Not all sound files can be used as ringtones. Also the ringtone file has to be in the Ringtone [case counts here] folder for the phone to find it as a ringtone.)