First and foremost I'm a complete idiot when it comes to Linux. I've only been playing with it for a few weeks now, so please bear with my stupidity.

I'm having a problem installing any RPM here is what I get.

<ender-Console-Antivirus-7.0.1-3.linux-gcc3x.i586.rpm';echo RESULT=$?
error: failed dependencies:
/bin/sh is needed by BitDefender-Console-Antivirus-7.0.1-3
/bin/sh is needed by BitDefender-Console-Antivirus-7.0.1-3
/bin/sh is needed by BitDefender-Console-Antivirus-7.0.1-3
libc.so.6 is needed by BitDefender-Console-Antivirus-7.0.1-3
libc.so.6(GLIBC_2.0) is needed by BitDefender-Console-Antivirus-7.0.1-3
libc.so.6(GLIBC_2.1) is needed by BitDefender-Console-Antivirus-7.0.1-3
libc.so.6(GLIBC_2.1.3) is needed by BitDefender-Console-Antivirus-7.0.1-3
libc.so.6(GLIBC_2.2.3) is needed by BitDefender-Console-Antivirus-7.0.1-3
libc.so.6(GLIBC_2.3) is needed by BitDefender-Console-Antivirus-7.0.1-3
libdl.so.2 is needed by BitDefender-Console-Antivirus-7.0.1-3
libdl.so.2(GLIBC_2.0) is needed by BitDefender-Console-Antivirus-7.0.1-3
libdl.so.2(GLIBC_2.1) is needed by BitDefender-Console-Antivirus-7.0.1-3
RESULT=1

It's all greek to me. What can I do to install an AV program. I've never really needed an AV with my Windows machine but I figured I could use this as a way to learn more about Knoppix.

Also, I'm trying to get RealPlayer to integrate with Mozilla, I've installed RealPlayer and can run it fine, but when I try to play any Internet radio it gives me this message.

Could not find appropriate hxplay or realplay in system path to use as an embedded player.

Can anyone help me with these problems? Do you need any more information?