Can NOT find pluggins after uploading them in the WP admin panel

Hi,

I installed a theme using filezilla ftp manager and it was all good...I see the new theme in the themes section of the wordpress admin panel backend.

Then I installed/uploaded 3 pluggins using filezilla ftp manager as follows:

FCKeditor
all-in-one-seo-pack
google-sitemap-generator

PROBLEM: When I go to the Pluggins section of the WP admin panel, I do NOT see any of the above 3 pluggins I installed. I just see the 2 default pluggins: akismet and hello.

How do I find the new 3 pluggins I uploaded?
Please help.

Thank you very much.