Hi,
You've actually posted in the Windows Home Server forum, not XP.
However, if you have done a complete install, then all your old browsing history will have been removed, so you will have to start again as if it's a new computer. You can confirm the settings in Internet Explorer for future use, by going to the Tools menu, then Internet Options. On this page select the Settings button in the Browsing History section and you will be able to set the number of days to retain your history etc.
Colin