Overall, looks great... text on the left hand column is perhaps a bit tiny, though I should be wearing glasses. Perhaps worth adding a forum?
I think you sshould have different colours for the outer columns to differnetiate them from the centre one and focus more attention to the main content of your site. And you could also try using different colours for the headings.
Thanks a lot; BTW, LFG , there is a forum. I'm searching for a suitable template. more reviews are welcome. Changing the colours of the nav bar and ad bar. Thanks again.