While bouncing around dictionary.com, I found these quizzes. You may find them helpful. Give 'em a shot and see.

Interactive Grammar Quizzes | Punctuation Quizzes | Capitalization Quiz (http://www.grammarbook.com/interactive_quizzes_exercises.asp)

interesting. I didn't do too badly.

I just took some of those the other day!

Yeah, I did pretty good on the noun-verb ones. I learned a lot on punctuation when writing dialogue. I haven't written much dialog in years, so I found that one very helpful. There's lots of quizzes. There's bound to be something for everyone. These are a real help.

I did hopeless on the verb and subject thingy, but pretty good on the other ones.

Well, I got 98% (49/50) on the Grammar Mastery quiz. I slipped up on a who/whom question. I'll try the other two sites later.

I only did one quiz and I did horrible :s
Thanks for the link! I'm going to continue and try out the others later :)