Are you looking for ways to catch your wife cheating online? Have you seen a new behavior in her when she is around her computer? Does she spend a lot more time on the computer sometimes long after you have gone to bed?
I am sorry you have to go through this.
That is a hard thing to deal with. Think about this for a second, do you want to find out or do you want to save your relationship? Do you want to be right or happy...
Those are hard questions to ask yourself.
Believe me I am very much against cheating, but this is about you and your happiness. Your choice.
If you want to save your relationship check out this video - Magic of Making Up