Everything Else and Final Thoughts
For further tweaks (mainly XP users, though much applies to 2000), I strongly suggest you read our Windows XP Tweaking guides - Reformat to Relax and Relax to Righteous.
You may also want to read Black Viper's guides for services, if you're running Windows 2000 or Windows XP. His site has been down for some time, but you can still find a backup here.
It is recommended that only experienced users even bother with service tweaks, and even then only if you really want to push the performance of your computer. Messing with services can seriously hurt functionality, and even Black Viper's guide might not be able to stop you from screwing up.
If all has gone well, you should know have a fully functional PC running Windows.
If you've followed all of my advice, your system should be relatively secure and perform well. If you encountered any problems along the way, feel free to post your problem in our forums where you'll find friendly advice which won't cost you a dime.
If you think part of my guide was ambiguous or hard to understand in anyway, feel free to email me.