I don't currently have a place to host the file online, so I'll have to e-mail it to people who PM me. Tell you what, if you PM me your e-mail address, I'll wait until around 11:30 or so to see how many PMs I get and then I'll send it to anyone interested with your addresses in the bcc field to protect your identities. I looked to see if I could use my Twitter account to host it, but it doesn't seem to support this sort of file. Neither does Photobucket.
Minty Fresh, I haven't had a Blackberry for several years and so I don't know the answer to your query, but a Google search for "convert iPhone ringtone to Blackberry" seems to imply it's doable. You might need iTunes since an iPhone ringtone is an .m4r file, which is an Apple Lossless file, although I know some other audio converters can handle Apple Lossless as well.
Of course, if the moderators have a way to host the file on the forum, I'll send it to one of them for uploading!
