Regarding Defrag Programs

My general understanding is that it isnt necessary to defrag very often. An occasional defrag should do the trick. Unless, maybe, youve done a lot of stuff recently. I do have several questions though that I hope someone can clear up for me and anyone else that might be interested.

1. Does a pre windows defrag program help any at all? If so, how often should it be run?

2. Is this different than the pre installed Microsoft chkdsk program? Isnt it also a pre windows defrag program?

3. Is one or the other better? Or are they basically the same?

4. What happens if, on occasion, you use a pre windows defrag program and the chkdsk program? Is there a conflict?

5. Does one try to write a certain way and the other rewrites a different way and therefore your wasting your time and effort?

6. Does a pre windows defrag program make a windows defrag program unnecessary?

7. Since it has been stated that the windows defrag program works fine, but isnt the greatest, what if you use a different combination, like, JkDefrag and a pre windows program? I mention JkDefrag because, if you wanted, it can be set to defrag daily or weekly. Set and forget.

8. Assuming one is doing a lot of stuff, when does a registry defrag program enter the picture? Or is one ever needed? Is this just a marketing thing?

9. And, of course, there are also registry cleaners. Again, assuming your doing lots of stuff.

10. And also theres also programs like CCleaner program, which cleans out cookies, temp files, etc.

11. Is there an order that one might want to run these programs? Even if it is only monthly or even less often?

So, my inquiry, isnt which program is better, as I would assume there would be a lot of opinions about that. But rather, what combo might one want to have on hand, or run, on those occasions that you feel the need to defrag. Again, if we look at the CCleaner program, in basically one step, it does a pretty good job of cleaning out all sorts of stuff. If you wanted, it can even be set to clean automatically. Set and forget. If one were to do the same steps, manually, it would take much longer, and maybe, still not be as effective as the CCleaner program. I have Zone Alarm firewall. Basically its set and, for the most part, forgotten about. I have the AVG anti virus program, set to do auto scans on a daily basis. Set and forget.