You mean 102
4 by 76
8.
My screen res is an odd 1152x864.
I'd go to 1280 but my monitor is a little older and 'whistles' when certain windows are open at that res. And it's annoying. So i'm one step below 1280.
Any learned designer should know to check their designs in at least 8x6 res. Because depending on what type of site they're creating, their target audience will more than likely be using 8x6.
Because i usually center all my designs, 8x6 is about my only concern. The resolutions above that will never pose any problems with layout. Only text being too small will usually be the issue for higher resolutions.