You need to download the 'Android Terminal Emulator' by Jack Pavlovic (sp?). That one works just fine.
As for those apps you wanna get rid of, once you have terminal emulator working, you can:
which will list all your system apps. Jot down the ones you wanna get rid of.Code:su sysrw cd /system/app/ ls
Code:rm AmazonMP3.apk rm [...insert app here] sync sysro