You can not increase the actual pixel information without distorting/blurring. Pixels do not stretch... And there is no such thing as a 'web window'. Everyone who looks at your page can decide their own window size, so there is never a design that will 'fill' every page size. It all depends on the viewer. The only way to achieve a completely filled page that adapts itself to the viewers size of choice, is to base your design on tables, or make your lay-out it css-driven with procentual values. But that is totally out of the realm of photoshop, we are talking GoLive or Dreamweaver here. The easy way to solve your problem is to choose a background color that matches your design, or complements it. Center the templates result (which is a non-stretching table) in the html page en take the border left right and bottom for granted. You will need some kind of html editor to do the centering (you can set the background color during the export if I am correct), but you can not make any web page without that. That html stuff is not as easy as one would want. The html & images Photoshop/ImageReady make does not have the same result in every browser. Especially if you have differnt numbers of slices in different rows and columns. Some browsers will tear your page apart :-( When you are building your page, remember to look at it with every browser you can get your hands on. And via the PC of your granny, you best friend from school and Harry, Dick & Tom from across the street. The compression is also important. You can choose a different compression for every slice. If you just choose Very High for everything, granny will dose off before the first page is loaded via her dial-up modem. There is a lot to consider when making things for the web. It is a wild adventure that will costs you some sweat. But if it works it is all worth it!