Layer with Scroll Bars Help

Hey everyone, I'm trying to figure something out in Dreamweaver MX for my index
page of my site

What I'm looking to do is place a scrolling window on my index page to place
text information inside. I've got the window in place and I thought everything
looked great on my computer in IE6 but when viewing it on my GF's computer in
IE6 as well, my scrolling window was shoved all the way over to the right. My
resolution is 1920x1200 and she is running 1024x768. My site is designed to be
1024x768 This is the code that controls the position of the box as well as the
other attributes minus the text information: div id="TextBox"
style="position:absolute; left:0; top:350; width:900; height:175;
z-index:1; overflow: scroll; background-color: #000000; layer-background-color:
#000000; border: 1px none #000000; visibility: visible;"

The /div tag falls at the end of the text information. Dreamweaver has
"L" and "T" settings which are the "o" and
"350" values I was using to push my box to the location I wanted it
but it appears that's not going to do it. The left is currently set to 0 right
now but did have it at 512 which caused it to be centered on my site but pushed
it to the right on the other computer. Thanks for any help!