It's an old thread, but it's easy to add ringtones (even though Telus disables it).
1) Download & install Bitpim
2) Connect your phone using the USB cable provided.
3) In Bitpim, go to Edit>Settings, set your "Phone Type" to "LG-
VX-8700", and "Com Port" to "Auto"
3) Check View>View Filesystem
4) In the folders on the left, click on Filesystem, and navigate to
brew>shared
5) Add any MP3's you wish to use as a ringtone to the "ringtone" folder. You can also add pictures and video to the appropriate folders, or retrieve any photos or video's taken with the camera from the "mypicture" or "myvideo" folders.
6) Reboot your phone, and the added content will show up in in the ringtones (or picture/video) folder.