You can string multiple codes together like so....

boot: knoppix lang=us xmodule=nv wheelmouse noapic noapm

Don't use 'xvrefresh=60' unless that is correct for your monitor. You can find the 'refresh rate' for your monitor online or in the documentation that came with it. Likewise, don't use the 'wheelmouse' code unless you have one.

The simplest way to boot is like this:

boot: failsafe

As it says in the documentation this does minimal hardware detection.