I'm sorry to hear you're going through this. Just so you know, when my parents divorced, my dad was waiting on a lawsuit settlement from an accident at work. Splitting the settlement was actually put in the divorce papers, and my mom received half of the settlement as she was entitled to.
Make sure you retain a lawyer, because you'll need child support, the worker's comp case, and other things (possibly pensions or SS) to be laid out legally, and you'll want a lawyer to work with that. I know in a recent divorce in my family, the man had to pay the greater share of the cost of the divorce since he made so much more than his wife.
If you have proof, print it out in duplicate. You'll want one copy to give your husband and a second copy (kept somewhere else) to give the lawyer. I'd also suggest screen shots of any websites or email (use the "print screen" button on your keyboard and then paste it in to a paint document and save it with titles you'll understand), and then email those to yourself. These will also help prove your case when your husband erases all the evidence (and he will!). If he knows or might know your email address, start a new email address he doesn't know about and email all evidence to yourself. That way, it's someplace he can't get to it to erase.
Protect yourself, here. If he's cheating, who knows what else he'd be willing to do. Also, even if you have all these backups, it's still easy to get rid of them if you decide to try and work it out.
