Best Theme Creator Programs?

I folks, I have been trying out ThemeDreamer in DW CS4 for the Mac, and I’m really having trouble with the interface getting it to do what I want. I was trying to create a flexible width theme by modifying the included one. Just not visual enough for me and the CSS is hard to find for the right section.

Can anyone suggest a smooth visual creator/editor? If it is on Windows, it would have to be stand alone, since I don’t have CS4 for Win.

Thanks
Jeff