I haven't looked through all of your portfoliio there, but if you guys designed and developed any of those websites from scratch, you might want to consider using XHTML 1.0 Strict from now on instead of the XHTML 1.0 Transitional or HTML 4.01 Transitional. Also if you can, avoid using tables for layouts (W3C recommended against it late last year).
Also to save a bit of time on loading and CPU processing, consider using CSS-based dropdown menus instead of Javascript-based ones.
Also switch from using GIFs to PNGs if you can (ex: the military service branch insignias at the end of
this CTRD Construction website. Better quality, better alpha transparency, higher color variance.
Edit: You seem to have extravaneous source beginning at the top of this page:
http://curt.acusimplesites.com/
- I see two HTML begin tags and part of a table with no closing row, cell, or table.
If you need help, I can point you towards some public resources that I use/have used myself.