Uninstalling system apps on HTC Hero GSM

OK, My phone came with some Default Apps that i don't need. So here are the steps that I used to uninstall the System App.
NOTES: system must be rooted.
1. need to be root to remove System App using: su
2. mount the file block system of the phone OS: mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system 
3. go into the directory to see what applications are on the phone: cd /system/app
4. list apps available on the phone: ls
5. choose an application form the list to remove. For example, if i want to remove Stock app, here is the command that i will use:

    rm Stock.apk
    rm Stock.odex