Ummm........dude, grow some knowledge.
Unless your computer is a fucking network within itself, you can't use a PHP IMG tag on a file on your personal computer that is connected to the internet. You may be on the internet, but your hard drive isn't a host. Find a host, upload the picture and then post a link.
Jesus, hate to be an asshole (bullshit, I love it) but this is knowledge known now as "common sense". In my eyes, welcome to 1995. Noob.
NP: Dimmu Borgir - The Insight and the Catharsis