Moving Domain - SQL Server 2000 SP4 RS SP2

Hi,
we have an implementation of SQL Server 2000 Reporting Services which has
been moved from it's original location -
http://servername/Reports/Pages/Folder.aspx to now point to a subdomain -
http://subdomain.domainname.intra/Pages/Folder.aspx but now the images and
css is not being applied correctly to the Report Manager. Can anyone suggest
as where I need to change in order to point the Report Manager at the correct
path for the new location of the files, i.e. the page to images used to be
http://servername/reports/images whereas now it is
http://subdomain.domainname.intra/images? ; Or will we need to reinstall
Reporting Services?

Thanks

Andrew