I NEED HELP WITH MY DIV OVERLAY LAYOUT PLZ! Options

[desakatao]

I am making a custom layout for MySpace i position all my images,links,ect. and it looks very good when i view it in my computer ...but.... when i view my page in some one else's computer all my images are in a totally diffrent position wich looks very disorganized and ugly. All my divs are not were i positioned them heres a picture of what my page looks like on my computer and what it is supposed to look like
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and this is what my page looks like on someone elses computer
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please help me ASAP PLEASE!

[desakatao]

Ok so "Mike" told me that i have to change the 50% into pixels and this is what i got

wich is much better now...but my div that covers my original myspace page is out of positon and on as you can see i also have the div positioned in "px" not "%". what do i do now?

the setup for the cover looks like this

.cover{
position:absolute;
top:90px;
left:50px;
margin-left:181px;
width:800px;
height:1000px;
z-index:2;
padding:0px;
border:0px solid black;
background-color:000000
}