It is a pretty good layout but I would say the links on the left shouldn't have the blue and purple linkage, but different rollover features. Also they shouldn't be spaced as far apart. Other than that try to pull in one more color besides the greys and blues.
you have dune quite good. But if you want i can make you a site layout that will make the looks so good u wouldn't beleve it, pm if you want me to do it for some NP$.