It looks quite nice, read below for my suggestions.
Okay first off, the header and the background are of a square nature, so you should incorporate that into the nav and side menus.
Don't rely too heavily on graphics to present your site, if you can get the same effect by using background colours and drop shadow techniques - then do so.
Also, to say that 800 * 600 isn't used much anymore is very ignorant - you'd be surprised at how many millions of internet users still use that (people on 14" monitors or people with visual impairments etc).
Don't forget to make it as xbrowser compliant and w3c standard compliant as possible.
--Solitude--
Okay first off, the header and the background are of a square nature, so you should incorporate that into the nav and side menus.
Don't rely too heavily on graphics to present your site, if you can get the same effect by using background colours and drop shadow techniques - then do so.
Also, to say that 800 * 600 isn't used much anymore is very ignorant - you'd be surprised at how many millions of internet users still use that (people on 14" monitors or people with visual impairments etc).
Don't forget to make it as xbrowser compliant and w3c standard compliant as possible.
--Solitude--