Nicely designed forum. Love the classic design. Anyway to start generating traffic to forum from scratch is going be hard. I would suggest you to Get some help to start posting and you can hire some forum posting service. Also find niche related forums maybe like tripadvisor.com . Add your signature there and post related to Thailand.
Design: OK Marketing stuffs: Need more attractive things to help your forum can get more visitors even customers. Overall, you should create sub forum called Sell/buy. People love to buy or trade on Thailand products, i think.
Your site is a pretty simple one and also very attractive. You should have some good visitor from this. If not then then i think you should change the blue color of your site. This might make some changes to your site.
Nice and simple. But in my opinion the header is too big. It would be nice if you made it into a logo. Cheers =)
On first glance, appears to have too much of text on it.. Try adding more images and visual content to let users feel more comfortable...