[Tony G]

Style wish, I like it and don't like it. The way you've organised your forum tables is ugly. Mainly because the forum name/description is too spaced out and you've shoved all the info in the corner. It just doesn't even out for me. You need to balance out where you put the info and that. It would look better if you put the post/thread info somewhere on the left side to fill up all the wasted space by the forum name/description bit. I really like the image background where the last thread posted info is though, that's really nify and nice looking.

The header is nice, but I think you could do something that stands a bit more out with the 'Web Design Forums.net' part of the header. Maybe if you made the text in that image bigger and extend the header down your page a bit, it would look better. But not that much bigger. Just enough to make a difference.

Forumdisplay is good. I like how you have the first part of the post showing underneath. But it can look a little too wordy for a list of threads in a forum..

Footer could use some improving. It's unorganised and really ruins the style as a whole. If you want your style to look good, make all of it look good.

Hope I helped. It's awesome that you did all of that without editing a file.