i used to use absolute positioning because i never realized there were more than one resolution haha. that was back in the day.

now i use floats which basically you just use css classes such as float:left; and float:right;

just make sure you make an empty div with class of "clear" in it with the css as:

.clear{
clear:both;
}

i hope this helps. you will obviously need to make some changes, but it will be worth it so that your site is completely cross-browser compatible! =]