I need support.
1. If I use anonymous (IP hiding) software such as "Invisible Browsing 4.0" Or "Anonymity 4 Proxy", etc; Can They see my password?
2. How Can I Get a CMS Like MyBB's main page?
For the answer to the first question, if you use another website or software to hide your IP, you are sending your form data through this "proxy" and if the author of the "proxy" is malacious, then they can script something to log all the pages that you visit, and any form data sent. So there is a chance that your personal information that you send via these softwares be leaked if they are 'spyware' and log your information. But it really depends on the software. Google the software to see if there are any good/bad reviews on them. We can't guarantee that your password will be safe if you use these softwares. We can't guarantee that your password will be safe if you don't use these softwares and don't use https connection. The only way your password will be kept safe is if the server the forum is on is connected by https (secure HTTP) which encrypts everything you send so no one along the way can view the information.
Bottom line is, if you use these softwares, there is always a chance that your password will be leaked out. I hope I have answered your questions sufficiently since you're asking this again I'm assuming my previous response was inadequate.
As for the second question, you have already posted a thread here about it:
http://community.mybboard.net/showthread.php?tid=4924. I'll continue discussion about this topic in that thread.