>What's the protocol for saying thanks here? I ask a question... get a bunch of helpful replies... then want
>to thank everyone. Is it best to just say thanks in advance in the original message or do you guys/gals
>like it better when you get a personal reply?

The best is to say it here. Because, all will know that your problem has been solved.

You can also mention what solved your problem. To thank all involved in your answer, you can check the ones when you reply to the thread.