HTML to SSI causes problem

[Obivionfog]

Hi, I was just coding a site and was changing the site header, footer, and navigation bars. So where in between, the space between the main content column and the right navigation bar dissappeared. When I tried switching back to HTML to figure out the error, nothing seems to work. Site Here (http://www.video-center.co.nr)

[_Aerospace_Eng_]

Looks fine here. Screenshot attached.
http://img464.imageshack.us/img464/5184/videocenterssau4.th.jpg (http://img464.imageshack.us/my.php?image=videocenterssau4.jpg)

[Obivionfog]

It looks okay, but there used to be a space. In the attached image, I circled the areas in red. There is supposed to be a small gap between the columns, but the gap between the center and right column vanished.

http://img201.imageshack.us/img201/3041/ssierroroi4.th.jpg (http://img201.imageshack.us/my.php?image=ssierroroi4.jpg)

[_Aerospace_Eng_]

Hmm your code isn't valid. Making it valid might fix some of your issues.

http://validator.w3.org/check?verbose=1&uri=http%3A%2F%2Fwww.freewebs.com%2Frctlinux%2F