Step 1: Download KTorrent
Step 2: Install KTorrent
Step 3: Download this P2P blacklist (zip)
Step 4: Extract the contents of the zip.
Simple enough right?
Step 5: Open KTorrent and click on Settings

Step 6: Click on Configure KTorrent

Step 7: Click on Plugins, then select ipfilterplugin, then click Load

Step 8: Check Use PeerGuardian Filter

Step 9: Browse for the P2P blacklist file that you extracted*, then click on Download/Convert
It will download and read the file, then click Convert on the promp. It will load (can take a while). And then congrats you are finished!

*Some common mistakes on loading the ip list is people try and load it from the zip instead of the actual file, or try and use a web address. It must be extracted on your machine.
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I hope you enjoyed my little guide (aka first actual post), expect more in the future! I will edit this guide and expand it when I find the time, but it should do for now. Give me feed back on this guide, what you want added to it, what other things you want me to try and show you on Linux etc.
Cheers!