I noticed on the bottom of the HTC EVO 3g that there is a hole and if you take the cover off it looks like you can put a wrist strap or charm at the bottom. I cant seem to find an official word on this but was hoping someone could help me. i was able to take the old strap from my htc hero and hook it up, but wanted to make sure I wasnt going to break something if the actual thing that I am hooking to is not valid.

Thanks