Should I mail you chapter 7 then or will you copy-paste it? Kill the excess commas and semicolons, correct the few ocassional typos, tweak the verb tenses (although I certainly hope we can't get it that wrong, this is simple present... oO), fix whatever else is wrong and SUGGEST the necessary style changes (This is precaution as some of the previous betas tried to change the meaning of our sentences and we can't stand that.)

Naturally, we'll be forever thankful if you do the job. A few people volunteered in the past to beta and we never heard about them again.