Good god! I didn't mean that I would know the answer, just that someone would, so don't blame me if this completely borks up your install.
Some services listen for connections which can be a security risk, check with:
netstat -tap|grep LISTEN and nmap localhost

Anyway I might as well take a shot at this so:

bind9 ,purge, DNS server, most people use what their ISP provides and you would know if you needed it.
portmap ,purge, Remote Procedure Call is used by NFS and NIS servers which you probably aren't running
apmd ,keep, your Power Management
cupsys ,keep, the printing server
dbus-1 ,remove, used for interapplication communication, I purged it without effects but I'm not sure about this
dhcp3-server ,purge, same as with bind you probably don't need this unless your machine is a dhcp server/router
makedev ,keep, not sure about this
partimaged ,remove, a drive imaging/ghosting software which you can start if you need it
rsync ,remove, used for transfering differences of files over a network
ssh ,remove, like encrypted telnet, good to have if you want remote login to your computer
sslwrap ,remove, encryption for mail servers etc., not sure.
xfs ,keep, the font server for X-windows
bluez-utils ,can't say, it's for bluetooth which I don't know if you have
squid ,purge, a proxy server you probably aren't running
fetchmail ,purge, the name says it all and you probably have a normal mail account used with kmail/mozilla
kdm ,keep, your window manager with login screen
xdm ,remove, can someone who actually runs Knoppix confirm that it still uses kdm?

purge after a service means apt-get --purge remove servicename which completely removes it from your computer
remove means update-rc.d -f servicename remove which just removes the startup links
If you want one of them back, say ssh do: update-rc.d ssh defaults
I also don't run any inetd services, check /etc/inetd.conf and comment out everything with a #