Generating Tables in a TwentyTen Post?

Right now I’m just using the default TwentyTen theme and I’m trying to split part of my posts into a table that contains three columns and 10 rows. The left column’s rows would be all merged to fit a picture while the middle and right would each feature 10 rows.

The problem is that I can easily make this table with everything looking correct in a program like Dreamweaver; however, when I copy and paste the HTML code from Dreamweaver into the HTML of a post, I run into problems. The style is completely changed and my table looks terrible. Instead of everything being lined up and even, the spacing becomes too wide and the image won’t even align with the rest of the table… Is there a better way to add tables to posts or split content in post into 3 columns?

I tried inputting the same HTML text into another theme’s post and it displayed a lot cleaner. The main problem I’m having is that I can’t figure out how to define the exact widths of each column. For example, the first column that displays an image (180px width) is wider than 180px, so there’s tons of extra space in that column that I don’t want. For some reason the image also causes the other 2 column’s to be bumped down below it… This only happens with the TwentyTen theme, my other theme changes the size of the column so that there’s only enough space for the image and lines everything up perfect. How can I adjust TwentyTen’s style so that it removes borders/extra spacing from tables? Here’s an example of the table code I’m copying and pasting into each post’s HTML.

Here’s an image of the problem: http://yfrog.com/3ttesttablej
Here’s the code I’m using: http://wordpress.pastebin.com/SN6MqGxn