You can PM me if you want specific information on how to dig into browser history and the like. I try not to put that stuff on the public-facing forums here, since it's too likely that a WS may come across it and use my helpful information to hide their own actions.
I'm right where you are now, working just off what I found in browser history and a simple hard drive search. My H confessed to the porn but claims the hookup site I found was a popup. I don't believe him. I know how frustrating it is not being tech savvy and wanting more information NOW. I'm waiting around for my WH to become more active on his computer in case he doesn't delete browser history. But I, too, would like to know how to dig around a hard drive to see EVERY internet site visited in the last... however long, how often visited, etc.
Ascian, I too could use your expertise. I don't have the requisite number of posts yet to initiate a PM. Could you send me a PM so I could ask you a question or two?
Dating sites and hook up sites are a different story. I would clear the cookies and look at the history again in a month or so. You can also research this very inexpensive program that will snap a picture of every screen your husband looks at on the computer. It can email the pics to you or u can opt to have them saved in the program hidden on the computer. It's undetectable.
I decided I didn't want to play detective anymore but it's an amazing tool to make you feel better about what he is up to when you can't stand guard. (You just might not always like what you see)