Mike,
Pics can't be copied or dragged from desktop to forum. The pic has to be on the web/internet already before you can transfer it to a forum. There are a number of places to store pictures on the internet, some free some not. I use
www.photobucket.com which is free but they ask for a donation if you like their services. Once you have the picture on a service, it's just a matter of a couple of clicks to get it over here.