5
if i click on the link for your site, I get a blank page. If you view the source, there's a javascript script in there to go back 1 page in history - therefore giving a blank page.
What did you upload to the root? it should be the contents of the /html folder of the downloaded XOOPS package.
Another thought - if your hosting comes with CPanel, you may have Fantastico with it, which usually comes with XOOPS as one of the alternatives.