hi, Another little miracle worker I use is called Xen.
This works with a lot of operating systems- very simple to use, many features that I have not tried such as Registry stuff...I just use the CLEANUP feature, and it does clean index.dat, cookies, saved MRUs, what have you.
I would not advise using the the Registry cleaner, or other features ..unless you try these features on a spare computer that is not much good, no important info, etc.
I use Xen's cleanup once a week or so, just to remove all the URL's, Temp and TIF files, etc.
It is a console program, runs from a folder from a batch file, you use the keyboard to type a command letter like 1, or a letter to perform functions. Simply great little program. But> not something you would want laying around if kids use the computer and play around in Windows Explorer's folders.
Don't let the scary looking web page fool you>
http://www.x9000.net/
scroll way down to find the Downloads section, after you read about Xen's many features.
I have not used XenTweak so cannot advise about that.