CSS - Works in one res but not another

[csa]

My layout works except for the bottom bullet which doens't line up. I relise
this is because it is text-align:right;. If I adjust this to the left and then
alter the padding-left: 350px; I can see this working perfectly in all
resolutions but 800x600 where the bullets start to dissappear.

I believe this to be due to the
#mainwrap{
width: 830px;
}

When I adust the width I can get the bullets appearing in one resolution but
not another.

What is actually causing the problem here?

[url]http://www.media-drive.co.uk/nti/store/index11.html[/url]

Thanks