PerfectIt Versions 1, 2 and 3

Do I have to uninstall PerfectIt before I re-install it?
After I run PerfectIt Version 1, why is my document filled with bookmarks?
How do I install .NET 3.5?
How do I remove the icon in the Word toolbar / ribbon for PerfectIt 1 after I uninstall?
How do I uninstall PerfectIt Version 1?
I don't see the PerfectIt 3 icon in my ribbon (Word 2007 or higher), how can I load it?
I don't see the PerfectIt 3 icon in my toolbar (Word 2003 or lower), how can I load it?
I paid for PerfectIt Version 1, 2 or 3; can I download PerfectIt 4?
I've bought PerfectIt 1, 2 or 3 and want to re-install it. How do I download it?
Since installing PerfectIt 1, MS Word displays the message 'Changes have been made that affect the global template, Normal.dotm' whenever I exit. Is there a way to prevent the message from appearing?
What do I do if I get the error message "Unable to register the DLL/OCX: RegSvr32 failed with exit code 0x5"
What should I do if the PerfectIt window is blank or appears in a strange part of the screen?
Why is the Choose Tests window blank?
How can I re-enable PerfectIt 3 after Word disabled it?
Why is the 'Back' button and/or 'slider' disabled?