KGL wrote:
Basically what I am doing is just going thru all of the templates I have to see if they validate.
From what I gather it is fairly important to have a validated website, good for SE's, etc.
The only template that validates is "madeyourweb" and I hate how it looks.

I have very limited .PHP knowledge, so I just assumed I was to remove the aformentioned tags alltogether.
You are going to have a hard time since even the text editor doesn't always churn out valid XHTML. Don't worry about PHP, it is more to do with XHTML and CSS.
You might hate 'madeyourweb' but it is a good starting point to build your own using it since it is already valid. As for SEO, this is a complex issue, just because your site validates doesn't alway mean better ranking. Best tried and tested method is link exchange from popular sites, even meta tags are useless now.