Move to using CSS for layout and controlling style as I find this can result in less code e.g.
<FONT SIZE=2 FACE="arial, helvetica">balh balh blah</FONT>
Would go to:
<span class="type1">blah blah blah</span>
Saving 12 characters in the HTML, add all those up and it can be quite a saving.
Then in the external style sheet you have:
.type1 { font-family: arial, helvetica; font-size 2; }
The style sheet is normally downloaded once then cached.
The other thing you can do is move the title banner to be the background of a <div> so that it is downloaded after the rest of the site, it'll give the appearance of the site loading faster.
Finally you should feed your site through the validator at
http://validator.w3.org and fix all the errors.