That is the question being asked at a Search Engine Watch Forums thread. And to that extent, "How much HTML do I need to know first for SEO?" Most of the replies in the thread are adamant that HTML is a prerequisite to SEO.
SEOMike said;
html is the foundation to SEO. The first thing I do when I work on a site is go through and make sure the html is solid and that the site is accessable to the SE's.Like a bad foundation for a house, if it's cracked or shifting you cannot build anything stable on top of it.
Ian McAnerin said;
n my experience, about 60% of all difficulties in rankings are due to technical issues with coding or hosting/DNS.Therefore, if you do not know enough to troubleshoot these two areas, you are only able to do about 40% of your job.
I agree, a fundamental understanding and working knowledge of HTML is very important for one to perform their SEO Work.
Forum discussion at Search Engine Watch Forums.

Comments:
BJ Wright
10/10/2006 04:50 pm
It's funny that this is brought up! After reading your post's now for the last few weeks, i am hooked. You make it so much easier to find all the information that i am looking for, vs. going through and reading all the posts in the forums. Time is very limited! At this time i am in the same boat as the "newkidontheblock" and this is exaclty the question i had. Thanks!
Gabs
10/11/2006 02:54 pm
The comment I made over on DD blog applies here to imho.. http://www.seo-scoop.com/2006/10/06/stepping-on-seo-experts-toes/