If you want to delete it manually, you will have to go through pretty much all folders. Some might be in oddly named Program File folders, like $120381249104 or whatever.
Then, you may want to go through the Windows folder as well as some virii choose to hide there.
Virii like to rebuild themselves, and will hide rebuilding files through the entire computer.
This is another advantage to having complete knowledge of your folders and having all your important stuff in folders that you know are good, so if you get a virus like this, you can spot the odd folder out.
You can delete it manually fairly easily, but it's time consuming.
Last but not least, check the registry for anything pertaining to the program.
Or, just Google it and download a tool that will get rid of it, hopefully.