This IS Japanese, but what information are you looking for? What specific part do you want translated. I, or another member, may be able to help, but this is a massive amount of text.
You should give Google translate a shot and narrow down what info you're looking for.
All right, now that I'm off the train, I took another look at the page. It looks like it's encoded in S-JIS, which would explain things if you're not able to actually see the text in a readable format. I can't tell you how to do it for the browser you're specifically using, but just look up how to "change encoding to S-JIS in [browser]" and it'll tell you.
Second, it looks to be a walkthrough/explanation on hacking the event data and scenario files for the game Kunio-kun no Jidaigeki da yo, specifically for the PC remake (to the best of my knowledge).
As I mentioned above, you'll probably want to either narrow down the section you want translated, or explain what you're looking for. While many members here offer up their time to translate game dialogue, technical documentation just to be used as reference is another beast entirely. Not to say no one will do it, but it's going to be quite a bit of work, especially when you consider all the OTHER pages too.