my brother doesnt have an HC card but...from searching some BB forums if your BB has the 4.6 o/s you can run up to 32gb card. at least thats what people are saying. guess ill just order the card and if it doesnt work ill sell it.

* BlackBerry Device Software 4.2.0 Up to 2GB microSD
* BlackBerry Device Software 4.2.1 Up to 4GB microSDHC
* BlackBerry Device Software 4.2.2 Up to 4GB microSDHC
* BlackBerry Device Software 4.3.0 Up to 8GB microSDHC
* BlackBerry Device Software 4.5.0 Up to 8GB microSDHC
* BlackBerry Device Software 4.6.0 Up to 32GB microSDHC -