Aligning Nav bar with search bar

How do you align the “list pages” or nav bar with the search bar on the same line using css without distorting the dimensions of your design? I’ve tried using css float right for my search bar and css float left with my navigation inside the header file. And then of course using margin settings to postioning…But I can’t seem to get them working properly in both IE and FireFox? ;-(

Any suggestions?