Browser sizing issue

if i resizethe browser manully by dragging the edges it remians in the same position
when i execute my .net application the pages also open in the same resized cordiantes
and sometimes the window gets minimized on the taskbar with getting viewed / open on the screen

i need that the browser gets opened to its normal default size , & when opened it shdloud be viewed & get miminized only if the user minimizes