place text in the header on a fixed place

Hey,
i have a lil bit text in my header as you can see here: http://www.myimg.de/?img=112ef3.jpg

i think its look quiet nice, but its not fixed on this place.

a friend of mine has a bigger screen then me, and the page looked like this at his computer: http://www.myimg.de/?img=1058798167744681901465739dbdda.jpg

is there a way to place the text on a fixed area. it is very important, cause i hate the login boxes and want it like this. would be great if you can help me fast.

thx and greetings