Computer protection????????

I’m building a computer. I’m spending a lot of money on it. I want to know ALL protection needed to keep my computer clean and healthy.

What is the best program for the following? (Preferably NOT free)

Anti-Virus
Anti-Spyware/Malware/Adware
Disk Defragmenter
Registry Cleaner
Disk Cleanup

And if I missed any other cleaning/health program, please specify!
And I don’t necessarily mean one program for all.

I know registry cleaners won’t do the trick since a lot of programs leave behind registry files to later tell if its been used by the computer before. How can I find these reg files that are associated with a particular program? Any tricks (while installed still or not I just need this program removed completely)? Thanks
Btw its a screen recorder

am seeking a very good Freeware Registry Cleaner,can anyone recommend a good one? any help appreicated,thnks.

registry cleaners???

Are they neccessary? Do they do more harm than good? Or are they a useful tool?

Additionally, which ones are the best and why?

Thanks in advance.

for example if I go to www.wikipedia.com it works. If i do a search on yahoo, google, etc and then try to go it does nothing just freezes and I have to reboot. This goes for any website or search I try to perform. No error messages just freezes up.

I have done spyware, malware, clean registry etc, cache, firewall turn off, run mcafee and windows programs reinstall etc. Please I need something more! Is this a virus? what else could it be? Everything else with the computer is fine not slow plenty of memory etc. Just the prob with the search.