Internet Explorer Plug In

In my Internet Explorer, I selected Run without Permission, I found that there are three plug in under the Visan Industries, I do not know when are they there, anyone knows? Are they virus, spyware, malware, etc?

Internet Explorer Plugin
I did not install much software on my pc, so anyone can let me know how they installed in my Internet Explorer? is it by software or by browsing some website? Are they harmful?

Programs
Thank you very much for your kind assistance.
mawinghoAsked:
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Raymond PengSystems EngineerCommented:
You will want to read more here from MS:

http://windows.microsoft.com/en-US/windows-vista/Internet-Explorer-add-ons-frequently-asked-questions

Visan Industries looks like a 3rd party - perhaps you use their products?

visan.com
mawinghoAuthor Commented:
I didn't install any unknown software as you can see from my programs list
Raymond PengSystems EngineerCommented:
IE Addins are addins for viewing special content on one's website via a browser.  Ex.  To view Flash videos in IE / Chrome, you need to install a browser addin from Adobe so you can view that particular webpage to the fullest extent.

If you do not use the addin - there's no reason to not uninstall.  The next time you visit the website, you'll be prompted to install anyways.  Hope this makes it clear.
mawinghoAuthor Commented:
The software is created by HP Photo Creation. I knew that by right click the Add On and select More Information

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mawinghoAuthor Commented:
Because this is the way to know where is the plug in is located and belong to which software.
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