I love GVIM as an editor, but my only gripe with it was, I was not able to figure out how to copy to clipboard and how to paste from clipboard. Finally, after poking around, I did figure it out.

Copying from clipboard:
In insert mode press <shift> + <insert>

Copying to clipboard:
Once you visually select the content to copy, press *y

There is a much simpler way to do this as listed in the link http://www.linuxquestions.org/questions/linux-newbie-8/gvim-cutcopy-paste-374760/.