Screen resolution problem

Hi, my problem is about screens, on my own screen, anything on my page appears where it should be, but when I check my site on someone's computer, my pictures, tables, etc, are not at the right place if the person has a bigger screen.
So my question is: Is there a code that auto-align everything at the right place, whatever the screen's resolution?
Im sure there's a way, since professionnal sites look the same whatever the computer or browser you look at them.
Thanks

Having a fluid / liquid design will help. check out this article to get an idea of what the design can do.

The other option is to design for the smaller resolution (say 800px in width) and then it will look the same in all screen resolutions.

Then all you have to worry about is the different browsers...

edit:-

you can also check out this example

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There were a few thread on this very subject recently

Advice on page widths etc
Designing Web Sites For All Screen Resolutions

Have you been using tables for layout?

Sorry for not have checked if there was already topics about that.

Ive read all of the links that both of the two first replies put and thanks alot, now my only problem is that Im not exactly sure if I got everything.
I usually have two tables in my pages, one at left for the navigation bar and one for the content at right, but some pages have one more depending of the decoration. To place my things I was mostly playing with the TDs widths, which is probably why Im such in big trouble now heh.
Since Im not a professionnal it seemed to be the best way of having everything at the right place.
Im not sure or to redo all of my code correctly, then put the "div id codes" to fix all.
Also, I know that on dreamweaver you can choose your resolution, but I dont know how it works(I was writting them and not using a program) but can we actually write in the codes the resolution?
And here's the link of the site:
http://www.freewebs.com/pikottine/index2.htm

Ditch the tables and use CSS...it's so much easier to control