I agree with Randy’s idea of adding a buffer between the text and the border around the table cells.
Here are a few ideas to improve your tables:
In the source code for your home page, you have specified the table height. It says: height=”5426″.
This really isn’t necessary. You can delete that part, and then you won’t have all that blank space at the bottom of the page. It would look more professional without the blank space, I think.
Also, you can delete height=”699″ from the poker review pages — this doesn’t do anything useful. The height specification does not “limit” the height of the table — it sets this height as the minimum height. So, if you have more content than what will fit in a table that is 699 units tall, the table will simply stretch vertically to fit all the content inside. On the other hand, if you have very little content (say 2 or 3 lines of text), the table will still be 699 units tall, and you will have a bunch of blank space underneath the text. So, I would remove all instances of height=”something” from your code.
About cellpadding and cellspacing — You should play around with each of these and see what happens to the appearance of the site. You have one table nested inside another, so you should experiment with the cellspacing and cellpadding of both tables. By increasing the value from cellpadding=”0″ to say, 5 or 10, you will be able to create margins between the text and the edge of the table. This will make it look more professional.
I don’t know how knowledgeable you are with HTML and such, but I saw something in the code that didn’t make much sense to me:
[HTML]
[/HTML]
There was that, and there were some other spots where you had a lot of nested DIVs that didn’t seem to be useful. I don’t know what to recommend here, except to suggest that you take some time and learn more about HTML.
I am a strong supporter of CSS (cascading style sheets) also, and I would suggest that you teach yourself a bit about that too. CSS can be extremely useful. It makes updating a site’s appearance very easy — you only edit one file, and the whole site is updated. 
I think it is definitely worth the time to learn it if you can. You will thank yourself a hundred times over. Once you know how to use it, you’ll wonder how you ever lived without it.
I like the colors you have chosen for your site — the green background and the white text work well together, and the yellow headers look nice.
I hope this helps! 