From Forum Nokia Wiki

Overview

Most of the graphics used in themes are vector graphics. carbide.ui does not provide in built support for editing these Graphics or other multimedia components. By default carbide.ui searches for default editors installed in the system. However, you can configure it according to your requirements.

How to Configure

1) Click on Preferences inside the Window menu.

2) Select carbide.ui -> External Tools option

3) Browse for external tools to be used to edit Bitmap, vector and Sound resources.

4) You can also set External Transfering Tool to be used to transfer the final build sis file to the device.