How or where will I find C:\Program Files(x86) in Ubuntu 13.04? I cannot find it. I need it as I have installed a game there and I need to uninstall it. I have already tried to post a similar question here but this was unclear. thanks
I'm guessing you used Wine?
If you have Wine installed then Wine will appear on your Menu.
Click on it and you will see, on the right panel of the menu, Browse C: Drive.
Click on that to see what is there.
You should immediately see Program Files(x86)
The Linux directory structure is different from Windows's one. There is no "Program Files" directory.
For more info about the Linux directory structure, I found this usefull link on the internet, which may help you: http://www.thegeekstuff.com/2010/09/linux-file-system-structure/
If the game you installed was a linux native game and you used a runnable file to install it (often .run/.bin, like most of the games from the Humble Bundle) they usually install themselves into the /opt directory.
Instead, if you used the Ubuntu Software Center (or