Replying to you just to keep this bundled together, but this is more for hugorodgerbrown:
Looks equally bad w/ Chrome/Safari and Win7. Looks fine in Firefox on Win7.
Renders properly on Chrome and OSX.
Yup - we are aware. That's one of the perils of a having a graphic designer rather than a web designer on board. We are nearing the end of a major overhaul (visually), so that should address these issues.