Dashboard: Plugins > Add New > Search: akismet
http://www.yoursite.xyz/wp-admin/plugin-install.php?tab=search&s=akismet&plugin-search-input=Search+Plugins
After installing and activating the Plugin, there will be the matter of an API key and you should be able to follow that process once you get to it.
Thread Starter
sram
(@sram)
but i don’t see plugins in my dash board i am using twenty ten theme.
and my wp is 3.4.1
Please forgive my assumption, and maybe you can find what you need here:
https://www.google.com/search?q=manual+install+akismet+wordpress+3.4.1